I’d imagine most people would utilize KoalaSats’ contribution to watch an “order book” in real time, kind of like the now-defunct nostr:npub1kdkl4prkt7jmy8cdzdutqv8988vekl93nj4r25zpqpa5uacm9jkqnsjzq5, rather than actually to shop *on* nostr.

You make a good point though, that if a client is also an exchange tool, that could bring some heat in certain jurisdictions.