Hello, I know that you want to get what you paid for in return but you have to be realistic. You are selling used parts and you cannot think to get the sticker price plus shipping that you paid in return. best bet you can get 75%ish of what you paid if you have all original accessories and boxes. Remember you might of gotten some rebates that will not be passed to us and some warranties. You could also try eBay with your mothers account seeing as she is a power seller and all is a small advantage. And people in these forums are cannibals and will tear away at prices till they get the best deal possible
That's life in these forums.
Anyways best of luck with the sale ^^