With this script you can sell your projects without resellers commission takes half the cost of your project. All profits just for you just need to install the script and add your products.
Or you can setup your own marketplace and accept any user to upload their products and share the link through the social media like Twitter, Facebook, etc..
The Multi-Vendor version is like a marketplace, multiple authors can sell their goods like on CodeCanyon. The admin can access to everything and also delete products. You customers/visitors can create a free account and choose between Buyer or Seller.
The Unique-Vendor version is available for only one seller (the admin most commonly) but your customers can always create an account to have their purchases listed.