I'll throw in my endorsement of transio's guesstimate - with a nudge toward the low end of that range because of the currently high gas prices.

This is a funny market to make sense out of, though. For example, there was a guy near Rochester who recently had his Foxfire red VX on eBay starting at $13,500, while KBB and Edmunds put the value of it around $11,000. I e-mailed with him about it because I'd love to trade up to a newer, low-mileage red VX, but I thought that the price was too high. He was pitching it for its rarity ("only 210 ever made in this color!"), but I thought it was just too much of a premium to pay.

Anyway, I had to bow out because we had to replace my wife's car, but I kept watching it. The seller was encouraged by the numebr of people watching the auction, but dropped the price a bit. What happened? No bids. He relisted it for $12,000 or so, and ended up dropping the starting bid down to $10,000 or so. I thought that would get the action going and he would sell it, but he STILL got no bids!

So my short answer is - don't find yourself on a seller's "it's rare! You love it! Pay me top dollar!" hook, and don't pay over the KBB/Edmunds fair value.