I don't have the best sale/practical market knowledge but I second this.
Like the guy near the top of this thread said, anything misc can be pretty hard to sell if you expect a reasonable price for it. Especially for the hector relax because it's so expensive in the shop. Need to set your expectations well bellow even $100 if you want to sell one I'd say.
I got mine from Dargon a few years ago for my birthday and I have no idea where he got it from.

(Also to clear up: it doesn't re-texture your joints. It's just a collectors piece. My joints look textured since I set hector's head to all my joint textures)