actually its the demand for YOUR car.
For example, i have a buddy that is currently looking for a GTS.
I have been pushing him to go take alook at your Viper since your within driving distance. He isnt even considering it. Why? He thinks the silverstripe is a bad combo because it makes the black look dull, and thinks the interior *****. I tell him for this price he can vinyl over the stripes and swap the interior. He wont budge, says there are plenty of other Vipers on the market and he'll just wait for the right one for him to come up. I don blame him.
This is a Great deal IMO, well Below market value. But just because you are below market value dosnt mean you are going to find a buyer quick. There are many collectibles(such as Vipers) that have a very limited buyer base. You watch PawnStars??? Sure the item might be worth ***, but you aint getting *** untill you locate a buyer, and simply lowering the price isnt necessarily going to find a buyer any quicker. Pawnstars is a cool show...
goodluck with the sale.