$450 does sound a bit on the uppermost end on what one should pay for a mid level bike like this. The best thing going for it is it's very good, close to new condition, and I think that's what the seller is mostly hanging his/her hat on with the pricing. I think that this bike can be negotiated down to the mid $300's easy if it "cooks" long enough on the market unsold. Your only problem would be a Bertoni fan that could not pass up the bike even at a too high a price might come along before you can deal down the price.
Chombi