Check the guidelines in eBay for selling items. You just need to set up an account with them. If you've ever bought anything from them, you already have one. There are millions of people who shop on eBay and you would probably be able to sell your things there. Go in and do a search for 3D objects to see what people are selling and how they present it. I've only bought things, I've never sold, so I'm not sure how to begin. There are introductions for new sellers and buyers on eBay. Read the rules. I hope this helps. Melanie