fix: Do not convert price to int, it's already an int. Callers must set the right value, don't convert.

Author: Antaris

libs/SailthruSDK/Api/Purchases/Purchase.cs

@@ -187,7 +187,7 @@ public override void Write(Utf8JsonWriter writer, UpsertPurchaseRequest value, J
 
 					writer.WriteStringProperty("id", item.Id, options);
 					writer.WriteStringProperty("title", item.Title, options);
-					writer.WriteNumberProperty("price", (int)(item.Price * 100), options);
+					writer.WriteNumberProperty("price", item.Price, options);
 					writer.WriteNumberProperty("qty", item.Quantity, options);
 					writer.WriteStringProperty("url", item.Url, options);