You are not forced in to using SD which is for private sellers selling their own unwanted items and not for a seller who is making items to sell. You have options.
'Business sellers are required to follow all government regulations, including registering as a business on eBay, and providing contact information and a return policy.
An eBay seller must register as a business if, for example, they sell items they have bought to resell, they make items in order to sell them, or if they buy items for their business.'
