npub12y…um2jf on Nostr: I'm technically naive here, but maybe users creating/buying NFT's for themselves ...

I'm technically naive here, but maybe users creating/buying NFT's for themselves should pick the relay fee, and for as long as the transaction (RBF) isn't confirmed, the "bid" for that NFT is still open, and someone can come along with a better relay fee to replace and close it off sooner?