OmniLotus00

Part1: I wanted to make a shop system that was very easy to update and fast. However I'm worried about the performance & speed while looping through a list (that has like 125+ items) splitting and then comparing E.G. Section 1 contains "Bruh" . Part2: To make the shop above I was thinking of using a list with a string like this "name||currency||amount||limit", so how would I make a big list. If you know how to answer to my 2 questions or a better way to do it, please leave some examples.