Thanks for your question Ed294!
So you will receive a 1099K from eBay. You'll want to make sure you report the full amount of the 1099. You'll start in TurboTax under "Other Common Income" look for the 1099K input. There is a new workflow coming from TurboTax which will ask you the full amount of the 1099 then a subsequent question will ask about the cost you paid for the item to make sure you get credit for that amount. Thanks again!