The clamp deal was big time a a score.
I've had good luck off craigslist too. Got my Twinkie Mobile (Grumman step van) there. It moved me three times, in addition to saving me trips to sites.
Got my AirHandler, floor model buffer with lights, storage and filtration for $100.00. The 1"x12"x20" filter provides and education on how much crap comes off of buffing wheels into the air without it. My other favorite craigslist tool is my four wheel grinder with infinite variable speed between 0 to 2,400 RPM.
Then there is the pawn shop thing. Only one I like - The Pawn Exchange in Olympia, Wash. They are bright and clean, and they will deal.
Saw a self leveling rotary laser there for $150.00. First thing is, there are no used, self leveling rotary lasers that cheap, so I grabbed it.
It used it nearly four years, then sold it on the Bay for $400.00.
Learned, you sell on Amazon and buy on E-Bay in the course of that last sale. On curiosity, I found the rotary I sold for about half the price.