I bought the intercomp EZ weigh set. Looks like it is around $800 right now. Good luck on finding a cheap set of a good brand name in good condition. The deals may be out there, but I looked quite awhile and only found ancient sets. The cables can be a pain to stuff back in the box, but for as little as I use them it would not be worth the extra money to go wireless.

Your best bet on making a little money back would be dyno type events or renting them out to club events.