Firstly, this has been discussed before here on SF
A google search reveals that the domain registrants details are fake, and a lot of the links on the site don't work, so it's probably a hoax.
The main thing that tips me off is the idea that people would bequeath their skin. For the prices these guys quote, I'd be willing to sell them mine post mortem, in exchange for a nice cheque for my family, but giving it to them? Doubtful.