I would not suggest paying the money for one of these specifically, but the concept is decent.
It's a bedmount carrier from Fabtech...and I know others make some similar. You drill a hole in the tub, bolt the nut/plate to the tub, load tire in bed, thread Y handle through center of wheel into the nut plate.
i have about $200 in my bumper carrier, and I get to keep all my precious interior space.
I could build one for about 120-150, most expensive piece is the hinge and latch. But it still adds a big tire on the back of your vehicle adding weight from a heavy tire and bumper and obstructs your view out the back of the window. Plus time into welding one up. I'd rather just throw the tire in the back when I wheel and leave it out when I'm not. I will probably build one eventually but I am sure I will run it in the back for a short while. It's also a pretty good look with the CJ tailgate swap.
I have my 33 on my carrier for now, when I bump to 35s and then 37s I don't really like that big of a tire on the back either way. That's just my personal preference though.
Ryan - A good eye, a light foot, and a smart rig. Bolt-ons are boring