as with most things collectable, it usually comes down to finding that one buyer looking for what you are selling.
It may have absolutely nothing at all to do with the price. Just a matter of timing and the right web site.
If a potential buyer is looking for a particular item and sees it for sale on this site, then, several items take over, like 1) condition, 2) price, 3) location, 4) shipping issues, etc.
not just price.
Also, who is to say something is "overpriced"? I typically use Audiogon's blue book feature to determine the average sale price of an item, and I typically price my item (unless very collectable) a little below blue book average.
This is why I don't tolerate low ballers. Also, I am reluctant to ship, really expensive items and use paypal. Because paypal protects the buyer not the seller and the seller can actually damage an item upon receipt (happened), tell paypal it wasn't working and paypal will refund the buyer the funds and the seller is now left holding a now non-working item.
It is best to have the buyer come over, hear the item work, pay for it, then and there and take delivery. but, if that can't happen realistically, then there may be issues. The buyer (in this case) better have really good approval scores.
anyway, many times it isn't the price, its timing.
enjoy