You might check ifixit. Don't know if they'll have boards for late models or not.
edit:
Yep, they do, but only have the 2.4 in stock and it's
$900.
Think I'd try to sell it on ebay, saying what happened in an "as is" sale. You might be surprised what someone is willing to pay for it.
Or you could part it out yourself. The bottom case, top case, etc.
I wouldn't touch buying this part on ebay with a 10' stick.