I think all NSX's are in a soft spot in the market cycle. They haven't been out of production long enough, none are old enough to start wearing antique tags and there are still enough people buying used ones and then growing tired of them fairly quickly and putting them back on the market for less than they paid. The economy is killing car sales in general and the NSX is not immune to that.
For those that are into ownership for the long term, values will turn the corner some day. As more get wrecked, modded beyond all recognition, die a natural death, then the supply goes down and adds value to pristine, all original, well documented examples. Plus, eight years away from antique tags for the first year cars which will start to bump the values. In eight years, not unreasonable to expect that there may only be 2000 examples left that are as they came off the showroom. Also, in eight years the ricer crowd will be close to thirty, have some money in their pocket and decide to fulfill their dream of the only Honda exotic.
I get lots of "what is it" from the gray haired crowd but the 20 somethings know everything about the car, down to debating tire life. Those are the ones that will be bidding up the prices of these cars when they start to have some disposable income. Until then, I hope no one is foolish enough to buy one of these as an investment and instead realize it is a drivers car to be enjoyed on the highway, not parked under cover in the garage.