diff --git a/gemp-lotr/gemp-lotr-server/src/main/java/com/gempukku/lotro/merchant/MerchantPriceModel.java b/gemp-lotr/gemp-lotr-server/src/main/java/com/gempukku/lotro/merchant/MerchantPriceModel.java
new file mode 100644
index 000000000..2e1ee97df
--- /dev/null
+++ b/gemp-lotr/gemp-lotr-server/src/main/java/com/gempukku/lotro/merchant/MerchantPriceModel.java
@@ -0,0 +1,9 @@
+package com.gempukku.lotro.merchant;
+
+import java.util.Date;
+
+public interface MerchantPriceModel {
+    public int getCardSellPrice(int lastTransactionValue, Date lastTransactionTime, Date openingTime, Date currentTime);
+
+    public int getCardBuyPrice(int lastTransactionValue, Date lastTransactionTime, Date openingTime, Date currentTime);
+}
diff --git a/gemp-lotr/gemp-lotr-server/src/main/java/com/gempukku/lotro/merchant/ParameterMerchantPriceModel.java b/gemp-lotr/gemp-lotr-server/src/main/java/com/gempukku/lotro/merchant/ParameterMerchantPriceModel.java
new file mode 100644
index 000000000..a8f49d4bc
--- /dev/null
+++ b/gemp-lotr/gemp-lotr-server/src/main/java/com/gempukku/lotro/merchant/ParameterMerchantPriceModel.java
@@ -0,0 +1,21 @@
+package com.gempukku.lotro.merchant;
+
+import java.util.Date;
+
+public class ParameterMerchantPriceModel implements MerchantPriceModel {
+    private static final int DAY = 24 * 60 * 60 * 1000;
+    private float _profitMargin = 0.7f;
+    private long _priceRevertTime = 5 * DAY;
+    private long _easingTime = 30 * DAY;
+
+    @Override
+    public int getCardBuyPrice(int lastTransactionValue, Date lastTransactionTime, Date openingTime, Date currentTime) {
+        return (int) Math.floor(_profitMargin
+                * getCardSellPrice(lastTransactionValue, lastTransactionTime, openingTime, currentTime));
+    }
+
+    @Override
+    public int getCardSellPrice(int lastTransactionValue, Date lastTransactionTime, Date openingTime, Date currentTime) {
+        return lastTransactionValue / (1 + ());
+    }
+}