We're part of the nostr:nprofile1qy88wumn8ghj7mn0wvhxcmmv9uq32amnwvaz7tmjv4kxz7fwv3sk6atn9e5k7tcqypr0vwm8ql8xwjt8uvczsvftf7vqgxw2kssg2v8hyvp3un0kxqlfq60keg5 collective, a bunch of de-commerce devs building that exact sort of stuff (Plebeian is part of the group too).
To keep it TLDR: the old marketplace spec (NIP-15) has been 'deprecated' by all of us in favor of NIP-99. The spec doesn't use 'stalls' but instead uses your Nostr account as the staore.
Yes, you can totally embed a lil' widget that displays your products on your website. An awesome, extended example of this is nostr:nprofile1qythwumn8ghj7cmjv4shgu3wdehhxarj9emkjmn9qy2hwumn8ghj7etyv4hzumn0wd68ytnvv9hxgqpqgwa27rpgum8mr9d30msg8cv7kwj2lhav2nvmdwh3wqnsa5vnudxqll2d4e 's recently-created e-card art website (I've been so swamped that I haven't finished helping him deploy it yet, but maybe he can chime in with a link to pre-prod). His products appear on all of our Marketplaces, while also appearing on his personal site. Generated with excellence on https://shakespeare.diy ; though there were some spec issues with the final product from Shakespeare, it was quite close to the mark. Very impressive.
Adding a product on any of our marketplaces populates it to all of our marketplaces, and would appear on your site.
We over at nostr:nprofile1qyf8wumn8ghj7ur4wfcxcetsv9njuetnqy28wumn8ghj7un9d3shjtnyv9kh2uewd9hsqgyajgrhch344am00vwds3ecqq9hhta585stpgnvrrlzn75r35n3gc3yccuz are workin' our buns off to bring our Marketplace and Merchant Portal to launch next month, and our next plan-of-attack is getting a personal store creator up-and-running. Check back often! Feel free to subscribe to our newsletter at https://conduit.market to stay in the loop, too