We bought our first contract via resale and couldn't be happier! Great price and no difference than buying from Disney.

I would never!

But did you delete them? The only hope if you did would be to run some recovery software to try to pull them back from the abyss. If your hard drive is at all close to full or if it was a long time ago chances are slim of getting them back. I did make a copy of the photopass pics today though and will get them in the mail just as soon as possible.
As Nicole already said, facebook resizes them as you upload so the quality will be low.