gedaliyah Mod , 5 hours ago

The seller sends an item to the Amazon warehouse to be sold, Amazon fulfillment sends it to the buyer. Buyer returns it, and it goes back to the amazon warehouse and back into the store's digital inventory. It gets sold again and amazon fulfillment sends it out.

You can run a store without using Amazon but it may be hard to compete. Amazon has identical products in warehouses all over the world so even if it's not the specific item the seller sent to Amazon fulfillment, the customer can get same day delivery. This system also creates an intractible counterfeit problem.