An '04 still on the floor without ever being used is a bit of a surprise, but believeable. I'd not only look to find out any changes since '04 but also find out what a new one sells for (at that dealer, it varies by region and you should be able to ask to see a recent invoice). If you are ready to buy it, you could ask that they fill it so you can test it; they may balk at the idea but they also want to move this and IF you get to the point where you are sure you want it I'd even offer a deposit to test it on their floor as a final check that all is well and that it fits/feels right. Also, if you do buy I'd make sure they state on your invoice that the warranty is full and starts upon delivery.