I bought my Paradigm Studio 100 v.2's for $300. I was pretty ecstatic. The owner was moving across the country in a few days and hadn't gotten rid of them yet, I saw it on craigslist right when it went up and was at his place within an hour.
Another survey - Best bargain you ever got
I purchased the following mid 1970's equipment for $400 back in 1997. All items were in mint condition complete with owners manuals and receipts This system cost over $6,000 in the mid 1970’s. Technics 1200 MK2 Turntable and power supply with granite base (serial number 6). Exteremely rare ESS Transar Speaker system complete with multiple necessary cables and equipment. Luxman Power Amp customed at Luxman with before and after specs (high power with massive caps), Luxman pre-amp customed at Luxman with before and after specs (toggle switch construction), Luxman eq customed at Luxman with before and after specs (toggle switch construction). OH yeah It also came with 50 mint albums. This deal was a once in a lifetime purchase.