Yes and yes. You would need to be registered with MissionFish. Set up a selling account for your nonprofit. Open an eBay store. The store subscription fee is not credited back through eBay Giving Works, but it is only 15 bucks a month. Listing insertion fees and FVFs are credited back 100 percent through eBay's Giving Works program when you are a registered charity selling 100 percent for your charity.