As a seller on ebay what is the problem? You will have the money up front and so that wont cause you any grief.
If it is a case of not wanting to pay the fees or the delay than that is another matter but i am certain that you would have a far better chance there than in the local rag or a computer store who will want to make a profit on any resale value and therefore pay you less.
You can also try amazon. I sell regularly through them w/o probs. You have to wait though for the money to be transferred to your b/ac.Generally around two wks if you are are first time seller with them.