No..I was struck how simple it was to scroll through a post from nostr:nprofile1qqs0fk6jwz7ejxchh6s7d5p473w7uwffr8pfga9m4sgrgtfz836wp5qpzfmhxue69uhhqatjwpkx2urpvuhx2ucpp4mhxue69uhkummn9ekx7mqpr3mhxue69uhkummnw3ez6vp39eukz6mfdphkumn99e3k7mgdykz55 with a bunch of paintings listed. The option to contact direct to discuss price and do a deal all p2p, no middleman.
A marketplace, as in a list of trusted suppliers, should be a personally compiled thing.
I speak as the opposite of a consumer monster, most of my purchases are on food, and I try to keep it local. So my list of purchases is probably not as extensive as yours :)