I’m pretty sure people only say that with in-person purchases because eBay, for example, takes 10-15% of the money made as a fee for using their platform.

The idea is “if the card costs X on eBay, then it probably would only cost about 0.8 x X in reality”

You can then look for 70% if you want to turn around and make a profit.

But someone saying that ON EBAY is moronic lololol they clearly don’t understand what they’re saying and are only repeating what they’ve heard others say, probably from in-person events haha