I’m not sure if this is still of interest – but BuddyBoss has developed a premium theme Social Marketplace that could probably do what you’re looking for:
Yes, you would also need WordPress (free) and BuddyPress (free) and WooCommerce (free) to get it running. I haven’t tried it myself yet, but I’m currently working on a site using Social Portfolio by BuddyBoss and I must say they did a great job. It can be quite demanding to get everything working, but so far I have no complaints. Cheers!
