First of all, forget new. With high end items, the risk of getting a turd is a lot lower when unable to try before you buy. Ask a lot of questions and request detailed pics though.
Los Angeles Craigslist, Reverb, and Ebay are your best bet. I'm even considering starting a business where I buy from LA Craigslist, ensure condition, and ship. It has it's risks, but we simply have the best access to the best gear.....not a boast, but a fact.