I really love the idea.

And actually there was one similar service, which was called Hive List. It was a digital marketplace if I remember correctly, with lots of products as well as services. One that was pretty interesting was 🌈 a Hive integration Wordpress theme, where we get to buy a what's-it-called widget or something for Wordpress to aggregate all sorts of posts from Hive.

PeakD also has a Store option, which was quietly launched December of last year if I'm not mistaken.... It's under the Store tab in your profile and posts will go to the Hive Open Market. The URL will be https://peakd.com/shop.

I tried to sell something, a newsletter subscription here

Not many are selling anything on the Hive Open Market yet, but there are some that tries to sell art pieces with worldwide shipping. Again, a great thing! I'd use it.