How can I buy goods on ebay with bitcoin (So that I can make refund, if something does not work or it's broken)
Who knows the method?
This site will give option to buy a items in the ebay but you need to add the ebay purchasing link in this site and current price of the product in bitcoins. Mention the email you need a bill for the item you purchase.
http://btc-market.net/bitcoin/ebay-item-purchase.html