If your bid on ebay and did transaction with PayPal, you can. File a complaint on PayPal. PayPal will contact the seller. If you haven't got resonse from the seller within 10 days, you should escalate it to a claim. You should be able to get full refund. PayPal provides up to $200 insurance by default, if the seller fails to refund.
However, if you did 私下交易, it means you took the risk for the transaction. I doubt you can.