Allow Site Members to Create Merchandise Item

My goal is to create a Market Channel that hosts Sellers to post and sell their products in DIY style on our site, and so Buyers can buy the products through our channel. So, it’s going to be an indirect sale site, with dropship. In other words, we’ll build a place for sellers and buyers. The must-have core feature for this site is to allow seller-members to create Item, post image(s) for the Item, write Item’s description, and other attributes like price and payment method, all that at the site’s run-time. It’s kind of similar to the core feature provided by sites like eBay, Craigslist / Angieslist, and Yelp.
I checked many plugins and apps offered by many site builders, but so far found no widget that offers such functionality. Only direct sales features are abundantly supported. Not a DIY Market Place. That surprises me.
Any advice on the plugin to use and how to create such feature (maybe by a mixture of plugin and coding) would be much appreciated.
Thank you in advance.

Regards,
Vasut Kolsa