I use eBay plenty and have bought and sold higher end ($500-$2,000) audio gear there. When buying I always look for many instances of positive feedback and drop a question to the seller just to check out how the buyer responds. I have had excellent luck there with that simple vetting process.
If an item does not arrive at all or is not as described there is a fairly simple process to get a refund but it does take about a week or so to wait for that stuff to get worked out.
As a seller I have tried audiomart and Audiogon but just use eBay now as I get higher prices in the auction format and get tired of all the back ids on those sites. I will say the quality of the sellers on Audiogon are great so prefer to buy there when I can.
If an item does not arrive at all or is not as described there is a fairly simple process to get a refund but it does take about a week or so to wait for that stuff to get worked out.
As a seller I have tried audiomart and Audiogon but just use eBay now as I get higher prices in the auction format and get tired of all the back ids on those sites. I will say the quality of the sellers on Audiogon are great so prefer to buy there when I can.