Ans. Yes, the same product can be sold by multiple vendors. You just need to install a plugin named Marketplace Seller Price Comparison for WordPress WooCommerce to your WooCommerce Multi Vendor Marketplace. 

After that, a seller can add the product which is available in the global catalog with different price, stock units, and conditions. This plugin allows the sellers to update their assigned products and also delete them.

This plugin gives the ability to compare price among different sellers for a single product. Now different sellers, selling the same product will be displayed on the product page. Buyer can choose from them as per the product reviews or on the basis of price.