Plug-in for Negotiating and Quote Request with Stores Owners on Multi-Site Install.

I'm looking to allow registered members to negotiate or request a quote for a product with individual stores (sites owners) on a Multi-Site install (Pro-Sites to be specific).

While googling it, I found and like this one but unfortunately it requires woocommerce plug-in. I believe MarketPress have better integration with pro-sites already.
See plugging below:

Thank you!