diff --git a/x/pricefeed/alias.go b/x/pricefeed/alias.go
index be764b2c..1e5aa2be 100644
--- a/x/pricefeed/alias.go
+++ b/x/pricefeed/alias.go
@@ -1,8 +1,8 @@
 // nolint
 // autogenerated code using github.com/rigelrozanski/multitool
 // aliases generated for the following subdirectories:
-// ALIASGEN: github.com/kava-labs/kava/x/pricefeed/types/
-// ALIASGEN: github.com/kava-labs/kava/x/pricefeed/keeper/
+// ALIASGEN: github.com/kava-labs/kava/x/pricefeed/keeper
+// ALIASGEN: github.com/kava-labs/kava/x/pricefeed/types
 package pricefeed
 
 import (
@@ -31,48 +31,54 @@ const (
 	RouterKey                     = types.RouterKey
 	QuerierRoute                  = types.QuerierRoute
 	DefaultParamspace             = types.DefaultParamspace
-	RawPriceFeedPrefix            = types.RawPriceFeedPrefix
-	CurrentPricePrefix            = types.CurrentPricePrefix
-	MarketPrefix                  = types.MarketPrefix
-	OraclePrefix                  = types.OraclePrefix
 	TypeMsgPostPrice              = types.TypeMsgPostPrice
-	QueryPrice                    = types.QueryPrice
-	QueryRawPrices                = types.QueryRawPrices
+	QueryGetParams                = types.QueryGetParams
 	QueryMarkets                  = types.QueryMarkets
+	QueryOracles                  = types.QueryOracles
+	QueryRawPrices                = types.QueryRawPrices
+	QueryPrice                    = types.QueryPrice
 )
 
 var (
 	// functions aliases
-	RegisterCodec       = types.RegisterCodec
-	ErrEmptyInput       = types.ErrEmptyInput
-	ErrExpired          = types.ErrExpired
-	ErrNoValidPrice     = types.ErrNoValidPrice
-	ErrInvalidMarket    = types.ErrInvalidMarket
-	ErrInvalidOracle    = types.ErrInvalidOracle
-	NewGenesisState     = types.NewGenesisState
-	DefaultGenesisState = types.DefaultGenesisState
-	NewMsgPostPrice     = types.NewMsgPostPrice
-	NewParams           = types.NewParams
-	DefaultParams       = types.DefaultParams
-	ParamKeyTable       = types.ParamKeyTable
-	NewKeeper           = keeper.NewKeeper
-	NewQuerier          = keeper.NewQuerier
+	NewKeeper                  = keeper.NewKeeper
+	NewQuerier                 = keeper.NewQuerier
+	RegisterCodec              = types.RegisterCodec
+	ErrEmptyInput              = types.ErrEmptyInput
+	ErrExpired                 = types.ErrExpired
+	ErrNoValidPrice            = types.ErrNoValidPrice
+	ErrInvalidMarket           = types.ErrInvalidMarket
+	ErrInvalidOracle           = types.ErrInvalidOracle
+	NewGenesisState            = types.NewGenesisState
+	DefaultGenesisState        = types.DefaultGenesisState
+	CurrentPriceKey            = types.CurrentPriceKey
+	RawPriceKey                = types.RawPriceKey
+	NewCurrentPrice            = types.NewCurrentPrice
+	NewPostedPrice             = types.NewPostedPrice
+	NewMsgPostPrice            = types.NewMsgPostPrice
+	NewParams                  = types.NewParams
+	DefaultParams              = types.DefaultParams
+	ParamKeyTable              = types.ParamKeyTable
+	NewQueryWithMarketIDParams = types.NewQueryWithMarketIDParams
 
 	// variable aliases
-	ModuleCdc      = types.ModuleCdc
-	KeyMarkets     = types.KeyMarkets
-	DefaultMarkets = types.DefaultMarkets
+	ModuleCdc          = types.ModuleCdc
+	CurrentPricePrefix = types.CurrentPricePrefix
+	RawPriceFeedPrefix = types.RawPriceFeedPrefix
+	KeyMarkets         = types.KeyMarkets
+	DefaultMarkets     = types.DefaultMarkets
 )
 
 type (
+	Keeper                  = keeper.Keeper
 	GenesisState            = types.GenesisState
 	Market                  = types.Market
 	Markets                 = types.Markets
 	CurrentPrice            = types.CurrentPrice
 	PostedPrice             = types.PostedPrice
+	PostedPrices            = types.PostedPrices
 	SortDecs                = types.SortDecs
 	MsgPostPrice            = types.MsgPostPrice
 	Params                  = types.Params
 	QueryWithMarketIDParams = types.QueryWithMarketIDParams
-	Keeper                  = keeper.Keeper
 )
diff --git a/x/pricefeed/keeper/keeper.go b/x/pricefeed/keeper/keeper.go
index 0e4fc8e9..bd769662 100644
--- a/x/pricefeed/keeper/keeper.go
+++ b/x/pricefeed/keeper/keeper.go
@@ -58,13 +58,9 @@ func (k Keeper) SetPrice(
 		}
 		// set the price for that particular oracle
 		if found {
-			prices[index] = types.PostedPrice{
-				MarketID: marketID, OracleAddress: oracle,
-				Price: price, Expiry: expiry}
+			prices[index] = types.NewPostedPrice(marketID, oracle, price, expiry)
 		} else {
-			prices = append(prices, types.PostedPrice{
-				MarketID: marketID, OracleAddress: oracle,
-				Price: price, Expiry: expiry})
+			prices = append(prices, types.NewPostedPrice(marketID, oracle, price, expiry))
 			index = len(prices) - 1
 		}
 
@@ -79,7 +75,7 @@ func (k Keeper) SetPrice(
 			),
 		)
 		store.Set(
-			[]byte(types.RawPriceFeedPrefix+marketID), k.cdc.MustMarshalBinaryBare(prices),
+			types.RawPriceKey(marketID), k.cdc.MustMarshalBinaryBare(prices),
 		)
 		return prices[index], nil
 	}
@@ -101,20 +97,17 @@ func (k Keeper) SetCurrentPrices(ctx sdk.Context, marketID string) sdk.Error {
 	}
 
 	prices := k.GetRawPrices(ctx, marketID)
-	var notExpiredPrices []types.CurrentPrice
+	var notExpiredPrices types.CurrentPrices
 	// filter out expired prices
 	for _, v := range prices {
 		if v.Expiry.After(ctx.BlockTime()) {
-			notExpiredPrices = append(notExpiredPrices, types.CurrentPrice{
-				MarketID: v.MarketID,
-				Price:    v.Price,
-			})
+			notExpiredPrices = append(notExpiredPrices, types.NewCurrentPrice(v.MarketID, v.Price))
 		}
 	}
 	if len(notExpiredPrices) == 0 {
 		store := ctx.KVStore(k.key)
 		store.Set(
-			[]byte(types.CurrentPricePrefix+marketID), k.cdc.MustMarshalBinaryBare(types.CurrentPrice{}),
+			types.CurrentPriceKey(marketID), k.cdc.MustMarshalBinaryBare(types.CurrentPrice{}),
 		)
 		return types.ErrNoValidPrice(k.codespace)
 	}
@@ -135,20 +128,17 @@ func (k Keeper) SetCurrentPrices(ctx sdk.Context, marketID string) sdk.Error {
 	}
 
 	store := ctx.KVStore(k.key)
-	currentPrice := types.CurrentPrice{
-		MarketID: marketID,
-		Price:    medianPrice,
-	}
+	currentPrice := types.NewCurrentPrice(marketID, medianPrice)
 
 	store.Set(
-		[]byte(types.CurrentPricePrefix+marketID), k.cdc.MustMarshalBinaryBare(currentPrice),
+		types.CurrentPriceKey(marketID), k.cdc.MustMarshalBinaryBare(currentPrice),
 	)
 
 	return nil
 }
 
 // CalculateMedianPrice calculates the median prices for the input prices.
-func (k Keeper) CalculateMedianPrice(ctx sdk.Context, prices []types.CurrentPrice) sdk.Dec {
+func (k Keeper) CalculateMedianPrice(ctx sdk.Context, prices types.CurrentPrices) sdk.Dec {
 	l := len(prices)
 
 	if l == 1 {
@@ -169,7 +159,7 @@ func (k Keeper) CalculateMedianPrice(ctx sdk.Context, prices []types.CurrentPric
 
 }
 
-func (k Keeper) calculateMeanPrice(ctx sdk.Context, prices []types.CurrentPrice) sdk.Dec {
+func (k Keeper) calculateMeanPrice(ctx sdk.Context, prices types.CurrentPrices) sdk.Dec {
 	sum := prices[0].Price.Add(prices[1].Price)
 	mean := sum.Quo(sdk.NewDec(2))
 	return mean
@@ -178,7 +168,7 @@ func (k Keeper) calculateMeanPrice(ctx sdk.Context, prices []types.CurrentPrice)
 // GetCurrentPrice fetches the current median price of all oracles for a specific market
 func (k Keeper) GetCurrentPrice(ctx sdk.Context, marketID string) (types.CurrentPrice, sdk.Error) {
 	store := ctx.KVStore(k.key)
-	bz := store.Get([]byte(types.CurrentPricePrefix + marketID))
+	bz := store.Get(types.CurrentPriceKey(marketID))
 
 	if bz == nil {
 		return types.CurrentPrice{}, types.ErrNoValidPrice(k.codespace)
@@ -192,10 +182,10 @@ func (k Keeper) GetCurrentPrice(ctx sdk.Context, marketID string) (types.Current
 }
 
 // GetRawPrices fetches the set of all prices posted by oracles for an asset
-func (k Keeper) GetRawPrices(ctx sdk.Context, marketID string) []types.PostedPrice {
+func (k Keeper) GetRawPrices(ctx sdk.Context, marketID string) types.PostedPrices {
 	store := ctx.KVStore(k.key)
-	bz := store.Get([]byte(types.RawPriceFeedPrefix + marketID))
-	var prices []types.PostedPrice
+	bz := store.Get(types.RawPriceKey(marketID))
+	var prices types.PostedPrices
 	k.cdc.MustUnmarshalBinaryBare(bz, &prices)
 	return prices
 }
diff --git a/x/pricefeed/simulation/decoder.go b/x/pricefeed/simulation/decoder.go
index 115565b3..3d4a07c4 100644
--- a/x/pricefeed/simulation/decoder.go
+++ b/x/pricefeed/simulation/decoder.go
@@ -1,12 +1,31 @@
 package simulation
 
 import (
+	"bytes"
+	"fmt"
+
 	"github.com/cosmos/cosmos-sdk/codec"
 	cmn "github.com/tendermint/tendermint/libs/common"
+
+	"github.com/kava-labs/kava/x/pricefeed/types"
 )
 
 // DecodeStore unmarshals the KVPair's Value to the corresponding pricefeed type
 func DecodeStore(cdc *codec.Codec, kvA, kvB cmn.KVPair) string {
-	// TODO implement this
-	return ""
+	switch {
+	case bytes.Contains(kvA.Key[:1], []byte(types.CurrentPricePrefix)):
+		var priceA, priceB types.CurrentPrice
+		cdc.MustUnmarshalBinaryBare(kvA.Value, &priceA)
+		cdc.MustUnmarshalBinaryBare(kvB.Value, &priceB)
+		return fmt.Sprintf("%s\n%s", priceA, priceB)
+
+	case bytes.Contains(kvA.Key[:1], []byte(types.RawPriceFeedPrefix)):
+		var postedPriceA, postedPriceB types.PostedPrices
+		cdc.MustUnmarshalBinaryBare(kvA.Value, &postedPriceA)
+		cdc.MustUnmarshalBinaryBare(kvB.Value, &postedPriceB)
+		return fmt.Sprintf("%s\n%s", postedPriceA, postedPriceB)
+
+	default:
+		panic(fmt.Sprintf("invalid %s key prefix %X", types.ModuleName, kvA.Key[:1]))
+	}
 }
diff --git a/x/pricefeed/simulation/decoder_test.go b/x/pricefeed/simulation/decoder_test.go
new file mode 100644
index 00000000..635ffa27
--- /dev/null
+++ b/x/pricefeed/simulation/decoder_test.go
@@ -0,0 +1,63 @@
+package simulation_test
+
+import (
+	"fmt"
+	"testing"
+	"time"
+
+	"github.com/cosmos/cosmos-sdk/codec"
+	sdk "github.com/cosmos/cosmos-sdk/types"
+	"github.com/kava-labs/kava/app"
+	"github.com/kava-labs/kava/x/pricefeed/simulation"
+	"github.com/kava-labs/kava/x/pricefeed/types"
+	"github.com/stretchr/testify/suite"
+	cmn "github.com/tendermint/tendermint/libs/common"
+	tmtime "github.com/tendermint/tendermint/types/time"
+)
+
+type decoderTest struct {
+	name        string
+	expectedLog string
+}
+
+type DecoderTestSuite struct {
+	suite.Suite
+
+	tests []decoderTest
+}
+
+func makeTestCodec() (cdc *codec.Codec) {
+	cdc = codec.New()
+	sdk.RegisterCodec(cdc)
+	codec.RegisterCrypto(cdc)
+	types.RegisterCodec(cdc)
+	return
+}
+
+func (suite *DecoderTestSuite) TestDecodeStore() {
+	cdc := makeTestCodec()
+	price := types.NewCurrentPrice("bnb:usd", sdk.MustNewDecFromStr("12.0"))
+	_, addrs := app.GeneratePrivKeyAddressPairs(1)
+	rawPrices := types.PostedPrices{
+		types.NewPostedPrice("bnb:usd", addrs[0], sdk.MustNewDecFromStr("12.0"), tmtime.Now().Add(time.Hour*2)),
+	}
+	kvPairs := cmn.KVPairs{
+		cmn.KVPair{Key: types.CurrentPriceKey("bnb:usd"), Value: cdc.MustMarshalBinaryBare(price)},
+		cmn.KVPair{Key: types.RawPriceKey("bnb:usd"), Value: cdc.MustMarshalBinaryBare(rawPrices)},
+	}
+
+	decoderTests := []decoderTest{
+		decoderTest{"current price", fmt.Sprintf("%s\n%s", price, price)},
+		decoderTest{"raw prices", fmt.Sprintf("%s\n%s", rawPrices, rawPrices)},
+	}
+
+	for i, t := range decoderTests {
+		suite.Run(t.name, func() {
+			suite.Equal(t.expectedLog, simulation.DecodeStore(cdc, kvPairs[i], kvPairs[i]))
+		})
+	}
+}
+
+func TestDecoderTestSuite(t *testing.T) {
+	suite.Run(t, new(DecoderTestSuite))
+}
diff --git a/x/pricefeed/types/key.go b/x/pricefeed/types/key.go
index a1107954..74a8a81b 100644
--- a/x/pricefeed/types/key.go
+++ b/x/pricefeed/types/key.go
@@ -15,16 +15,22 @@ const (
 
 	// DefaultParamspace default namestore
 	DefaultParamspace = ModuleName
+)
+
+var (
+	// CurrentPricePrefix prefix for the current price of an asset
+	CurrentPricePrefix = []byte{0x00}
 
 	// RawPriceFeedPrefix prefix for the raw pricefeed of an asset
-	RawPriceFeedPrefix = StoreKey + ":raw:"
-
-	// CurrentPricePrefix prefix for the current price of an asset
-	CurrentPricePrefix = StoreKey + ":currentprice:"
-
-	// MarketPrefix Prefix for the assets in the pricefeed system
-	MarketPrefix = StoreKey + ":markets"
-
-	// OraclePrefix store prefix for the oracle accounts
-	OraclePrefix = StoreKey + ":oracles"
+	RawPriceFeedPrefix = []byte{0x01}
 )
+
+// CurrentPriceKey returns the prefix for the current price
+func CurrentPriceKey(marketID string) []byte {
+	return append(CurrentPricePrefix, []byte(marketID)...)
+}
+
+// RawPriceKey returns the prefix for the raw price
+func RawPriceKey(marketID string) []byte {
+	return append(RawPriceFeedPrefix, []byte(marketID)...)
+}
diff --git a/x/pricefeed/types/market.go b/x/pricefeed/types/market.go
index a357db73..16231be8 100644
--- a/x/pricefeed/types/market.go
+++ b/x/pricefeed/types/market.go
@@ -46,6 +46,14 @@ type CurrentPrice struct {
 	Price    sdk.Dec `json:"price" yaml:"price"`
 }
 
+// NewCurrentPrice returns an instance of CurrentPrice
+func NewCurrentPrice(marketID string, price sdk.Dec) CurrentPrice {
+	return CurrentPrice{MarketID: marketID, Price: price}
+}
+
+// CurrentPrices type for an array of CurrentPrice
+type CurrentPrices []CurrentPrice
+
 // PostedPrice price for market posted by a specific oracle
 type PostedPrice struct {
 	MarketID      string         `json:"market_id" yaml:"market_id"`
@@ -54,6 +62,19 @@ type PostedPrice struct {
 	Expiry        time.Time      `json:"expiry" yaml:"expiry"`
 }
 
+// NewPostedPrice returns a new PostedPrice
+func NewPostedPrice(marketID string, oracle sdk.AccAddress, price sdk.Dec, expiry time.Time) PostedPrice {
+	return PostedPrice{
+		MarketID:      marketID,
+		OracleAddress: oracle,
+		Price:         price,
+		Expiry:        expiry,
+	}
+}
+
+// PostedPrices type for an array of PostedPrice
+type PostedPrices []PostedPrice
+
 // implement fmt.Stringer
 func (cp CurrentPrice) String() string {
 	return strings.TrimSpace(fmt.Sprintf(`Market ID: %s
@@ -68,6 +89,15 @@ Price: %s
 Expiry: %s`, pp.MarketID, pp.OracleAddress, pp.Price, pp.Expiry))
 }
 
+// String implements fmt.Stringer
+func (ps PostedPrices) String() string {
+	out := "Posted Prices:\n"
+	for _, p := range ps {
+		out += fmt.Sprintf("%s\n", p.String())
+	}
+	return strings.TrimSpace(out)
+}
+
 // SortDecs provides the interface needed to sort sdk.Dec slices
 type SortDecs []sdk.Dec