I sell Pokemon on eBay as a little side gig for extra weekend money. We get 50 free listings per month. Does anyone know if for example, I have reached my 50 free listings already and I change one of my items to 2 in stock from 1 in stock, would I be charged for that one extra listing? Or does eBay treat it as the same item and not bill me. I can list almost 300 items per month so I just want to know if I can make my quantity increase on all so that I reach 300 but without being charged.

Does this make sense? I can try again if not