The purpose of our Exclusive Seller program is to reward those of our members selling their content via our Marketplaces only, so first you need to remove all your products that you are putting on sale here from other online stores, and then you should conclude an agreement with us (you can do it online).
To join our Exclusive Seller program, go to your Profile and select Exclusivity. Then select Become an Exclusive Seller? and check Yes.
Note: You can switch your status once a two month (60 days)