Skill extraction alone will net you around 20 bill isk. Add to that the fact that you have to pay the transfer cost, id say 22+ would be decent. Not really specialized in anything, kinda generic skills and missing some core ones. Maizes offer would probably be the most accurate, but you can try instigating a bidding war. Set the buyout to maybe 25 bill, thats about as high as it would possibly get.
Well, no need to biomass. You can still sell the carcass. You can only extract until 5 million SP, and there are plenty of people willing to buy a 5 million SP character for 3-4 billion isk. They turn the 5 million SP chars into skillpoint farms.