Please consider Vehica do not support WooCommerce Plugin shop functionality (add to cart / checkout / purchase). Vehica has WooCommerce Payment Gateways integration. It can be used to process payments when users submit listings to your website e.g. to charge visitor extra $10.00 for making listing featured 7 days on your website.  Here is full article how it works: Monetization Systems – PayPal, Stripe and WooCommerce Payments Gateways