Ebay actually has automatic flagging to keep illegal products off their site. I know this because I once tried to sell a pulse oximetry meter there and it got

Ebay actually has automatic flagging to keep illegal products off their site. I know this because I once tried to sell a pulse oximetry meter there and it got autoflagged and taken down. Apparently you can't sell (some?) medical supplies on ebay even though I bought the pulse ox meter from the store.