Yes. Directly by posting the product or service over a single Kind-1 type of posting, or by using a coded service such as Plebeian Market or Amethyst integrated marketplace, to name a couple.

This is definitely being worked on by somebody. Probably several independent ventures.

nostr:nprofile1qqs2xugc5jyguqkj36rk0syv4tmnkjdtmtperttl7x9rqjy3ustdcvcpz3mhxue69uhhyetvv9ujuerpd46hxtnfduqs6amnwvaz7tmwdaejumr0dsq3camnwvaz7tmjv4kxz7fwd46hg6tw09mkzmrvv46zucm0d5yx7efd exists. You can also list your wares from Amethyst.

https://shopstr.store/

👀