Ask HN: Is anyone selling their chrome extension?

Does anyone know if there is a marketplace for Chrome extensions? People sell websites and apps that they've given up on all the time and I've seen sites like Flippa and Shopify's "exchange", but I can't find anywhere that caters to browser extensions.

I want to buy a chrome extension that has modest user adoption and see if I can grow the number of users.

For the past year I've been trying to come up with new tech-based business ideas (I'm a full-stack web developer) but it's actually really hard to come up with something that even two people will adopt. And I'm not getting much experience in scaling something, which I think is a valuable skill to have on my resume for a future job, or for when finally have a good viable tech idea myself.

A browser extension would be perfect because I'm not looking to make money and just want to get some experience scaling a product, without incurring too many costs. Browser extensions don't necessarily require server resources unless they're hosted, so I can scale a user base without worrying about having to make money to scale up hosting costs.

Again, I'm not looking to buy some massive chrome extension (that would actually be pointless for this), I just need to start off with something that at least has some user adoption (heck I'll take 50 users), instead of spending months trying to come up with a fresh idea.