I think we had a thread like this before, but I'll post again-
Three MD421's for around $200 on the bay.
Tascam US-2400 for $600 (they go between $850-$1000 now).
Two NS-10's, two extra tweeters, two extra woofers, and two extra crossovers for $300.
Rane 6 channel headphone amp/distribution for $10 (they sell for over $100 used and $200 new)
ISP Decimator pedal for free.
Vintage tube powered Conn strobe tuner for $30 (one just sold on Ebay for $130)
Blue MXR 6band EQ pedal for $20 (sold it on ebay for $150, Dime used these so people pay stupid money for some reason)