I've only bought one thing through Audiogon, but have never sold anything. From what I remember they've recently added some additional charges if you sell anything through them. It's hard to say which sight will be more effective at selling--eBay or Audiogon. You can try listing the Denon on both and just pull the ad that doesn't sell first.

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"Nothin' up my sleeve. . ." --Bullwinkle J. Moose