Wheel fitment tool-For Rent???

[BigBlockOlds]

Anyone have one of these or know of somewhere that might rent them out?

http://www.autowaretech.com/mountmate.html

I'd like to use one to help determine the backspacing needed for the wheels I'd like to run. But I can't quite justify spending $500 for something I'll use just once.

So I thought I'd see if anyone who already has one would like to rent it out or if someone knows of a place (commercial tire dealer, etc) that might rent these.

Thanks,