Hmm..
My best buys here on AG:
My McCormack gear: TLC-1 Deluxe, DAC-1 and DNA-1 Deluxe
Best buys on Craigslist: A sweet pair of KEF Q-90s and KEF 104/2s.
Best buys on eBay: Zu Wax speaker cables and Tannoy Mercury M1 monitors.
I didn't get great steals but paid around fair market value or a little below.
One day I hope to make one of those great deals or steals that audiophiles always have stories about.