I couldn't see how to give feedback to the Reallusion store, so apologies for putting this under the Hub.
I have bought many things from the recent sales, but when I am searching for new products, it is not obvious which ones I have bought before.
The only way to see if I have bought something already is if I put it into the basket to buy.

It would be really helpful to have a 'bought already' symbol on the product so that I am not adding things to the basket that I then need to remove again.

Same goes for the Wishlist. If I buy something from my wishlist, it doesn't remove it from the list but also doesn't tell you that I've bought it already.