I'd personally not buy any medications on EBay or any other non-licensed, non-pharmaceutical online retailer out of concerns they might be fake or contaminated or compromised in some other way. Counterfeit, sometimes fentanyl-laced drugs are increasingly entering the U.S. medicinal supply chain through illegitimate means and sometimes causing serious harm to people. I wonder whether it's legal to sell drugs on EBay, but even if it were, I'd still be concerned.