We've made a couple lifesized Vaporeons for people- they are $450 + shipping.

This massive beast is over three feet long from the tip of its nose to its rump, and weighs 13 pounds. S/he is made from minky, fleece, and vinyl, and has plastic tubing sewn into the fins to not only help the fins stand up, but to add some nice detail. The eyes and mouth are hand-painted, the pawpads are satin-stitched on, the nose is rubber.