All good points and I totally get it.
It would make sense for you *if* it were the case that bitcoiners outside of nostr were visiting Whitepaper Books through another channel, and your exposure on the store increased your customer base beyond your nostr customers. Maybe that will be the case someday, but at the moment WPB is not advertising anywhere else and is hardly a known quantity even here.
👍 happy to keep an eye on how things develop and discuss in the future. Thanks for considering it!