Think the real problem is that you are apparently marketing in the wrong venue. I mean...look around and see what stories of that
places crazy antics. If I were to actively push to sell something...it'd likely be here or on another specialty forum.
Why would I want to waste my time reading some ridiculous offer like that? A guy offers me a third what I have it posted for...there'd better be a damn good reason otherwise my price to him goes up another $50 bucks.
I guess no one goes to the swapmeet anymore...haggling is half the fun!
Edit: Kind of tempted to spend 15 minutes and hunt his FS threads with offers a third his asking price...