Anyone implemented a marketplace with JSP?

I have a VERY good idea for a market place. Actually my idea is so good that I just scratched my previous projects on which I spent 100s of hours to start this one!

Anyways, it will be a market place where people publish their stuff for sale. What would be the easiest way to handle this with JSP? Has anyone done this? 

Also, I couldnt find good infos about how this would be handle from a Stripe perspective. What is the best strategy to mitigate transaction fees?

Thanks. 

We've got a branch started on the Pay gem for this, but I haven't done much with it yet. Goal is to definitely officially support marketplaces in the future.

You can certainly work around things and just use the Stripe API directly wherever you need to for now.

Curious to see if anyone's built things like this so far. I think  John Chambers  may have done some?

Cool. While there does not seem to be a lot of enthusiasm to this post (!), I think a lot of business coult be made around marketplaces. While thinking about my current project, two more ideas came to me around the same theme. 

My favorite quote from DHH about Rails is that he feels like he is arming the rebels, people fighting off huge mega corporation, and from my experience, that is exactly what it excels at. So lets take Etsy down! :-) 

I built a marketplace for Clickandcollection.com by directly using the Stripe API like Chris mentioned above. The Stripe documentation has lots of ruby examples to get it up and running.

+1 marketplaces API for Stripe would be very interesting to me too! Happy to help. Maybe we can make it a team effort to add it to the Pay gem?