You can set the commission rate at the product level, the vendor level or globally for the entire marketplace. WC Vendors Pro includes more options for charging commissions beyond the basic percentage system offered in free. This includes fixed, fixed + fee and tiered commission rates.
Jamie is the founder and lead developer of WC Vendors. He has been working in the WordPress, WooCommerce and Marketplace space for more than 15 years, 9 of those dedicated to multivendor marketplaces.