Sell one of your livers. They go for an absolute fortune online. You've got a spare, and you don't need them both.
Trust me - I'm a doctor (more or less). I've got a medical degree and everything. I bought it from a guy on DP for $17. It would have been cheaper but the review copies had already gone.
Just take a pen-knife and perform the liverectomy yourself. That way you'll keep costs to an absolute minimum, and once you've extracted it, make sure you take a nice clear photo so you can upload it on Ebay.