I'm not a subject matter expert. But selling used computers, esp a couple years old, doesn't strike me as a good business. You might get lucky on Ebay. But why would someone spend money for a used, "out of date", possibly virus infected or otherwise defective laptop when they could can buy a brand new one from Dell or someone for a few hundred bucks more?
Not trying to cut you down, just playing Devil's Advocate. Unless you have a specific need for it or a solid plan to sell it I'd steer clear of it.