You can by a 13" i7, 256 in the Canadian Refurb store for only $1239 with a full one-year warranty. They don't have any similar 11s at the moment, but they'd clearly be going for less than you're asking.
You can buy a brand-new one like yours (but faster and USB 3.0) for 1429.
The accessories you added are, in resale terms, more or less incentives. You won't really get any money for them.
Well there is still the 15% tax that you save, but I think it's true that accessories are pretty much worthless. I should have bought an extra 85W MagSage instead of a 45W one just so that it would work with my any future Mac laptop I would have. Now I want to buy the rMBP and 45W isn't enough so I'd rather sell it. I can't blame no one but myself for this move though.