Custom Actions on Events

USS offers the ability to run functions you want when a shop restocks, and/or when an item from your shop is bought. To use that, simply put the following lines after your shop instantiation:
yourshopgo.GetComponent<ItemShop>().OnRestock += yourfuncwithoutbrackets;
yourshopgo.GetComponent<ItemShop>().OnBuy += yourfuncwithoutbrackets;

You can add as many functions as you want, just repeat the same line with a different function name.