I have a set of Proform 67650 Digital Scales I bought in 2008 for ~$800.  I've used them 4 times but otherwise the are like new and operate fine.  The scales consist a small electronics unit and four weighing units in a carrying case with handle and wheels.   The weighing units weight up to 1250 lbs each.  Some photos and a brief description can be found:

http://www.amazon.com/Proform-67650-Vehicle-System-4-Scale/dp/B001P29YBS

Best offer over $350 + shipping gets them.  Reply to me offline if you're interested.

Clark Still (N750S, KPOU, 845 266-5225)

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