my best ever "purchase" was not a purchase at all. whilst playing with a friend, he was trying a second hand taylormade burner but didn't feel it suited him. He gave me a go, and I ripped one straight down the middle, for miles! Another go on the next hole and - same again! And again! "The pro at the local muni gave me this to try, I'm away for two weeks, keep using it and if it's still as good when I get back, I'll go with you and we can make him an offer"
During the two weeks, the pro shop burnt down! He told me to keep it for free despite my offer of payment, and it was the best driver I have ever had, draw, fade, straight, off the floor, no shot was a problem.
Unfortunately, fate played a cruel trick and a few years later, the club and all my others were stolen. To this day I still can't hit a fade off the tee and still pine for my beloved "freebie".