I built my system in a similar way (e.g. a great Threshold S200 amplifier from the 80's cost me $700). One frustration I had was never being sure what is a goo

I built my system in a similar way (e.g. a great Threshold S200 amplifier from the 80's cost me $700). One frustration I had was never being sure what is a good price. In part to scratch that itch (as well as the "learn Haskell" itch), I've built http://kruipen.com http://kruipen.com to track used audio equipment prices.