FWIW, I've been trying to sell my quite-similar but supercharged VX in CT for the last couple of months (with no luck), and my asking price is down to $8250. I'm figuring that I'm asking a premium of $2.5k for the S/C, which means a "stock" price of $5750 for my '99 Astral VX in good condition with 107k miles on it.

I thought that was about right, but maybe it's still too high (seeing as it is not selling...).

Good luck!