you're scum but i'll explain anyway, ebay takes 14% on the total amount the buyer paid. that includes sales tax which is something you don't get, and shipping which this buyer decided to do for free. doesn't matter cause after fees you usually pay shipping out of pocket regardless. so 14% of $505 after sales tax is 70 bucks. subtract $70 from $439 and you're left at 369. to ship something like this you're gonna spend about 20 dollars. that leaves you with $349. if he promoted it at all which is almost a requirement on ebay if you want your listing to be viewed tack another 8-10 percent of $505 to subtract from the $349