<font color='#000000'>Audiogon.com is a sort of eBay for audiophiles. Seems to be well run. And actually, there seem to be a lot of 'philes who churn their gear regularly. Site has sellers & buyers world wide, even the frozen wastes of Canada, eh? Lots of good, late model stuff to be had there, including megabuck high-end gear. A friend of mine has dealt there with no problems.
And there's always eBay. As with any online auction site, caveat emptor. I got my Adcom GFA 545-II power amp on eBay.</font>