I feel as if the general store prices lowering depending on the stock is not a good system to use, if you sell a stack of your items they reduce down to being basically worthless and you wont know the amount youll get for your items until youve actually sold it all. I think it should be changed to which this feature is removed, and the store purchases items at a fixed rate.
Also, a proper decanting system should be added, not just the option for a (4) potion, but all four options should be available, Please consider these