it depends on the condition of the bike. that seems to be an average price for that model around here. the difference between the bikes is considerable. the power delivery is very different, with the 450 needing to be revved higher due to its short stroke to produce the most effect. you can still ride the 450 at lower revs quite nicely, but when in race mode, its a very quick, responsive and effective trail bike. of all the bergs i've owned, my 450 is by far the quickest on the trail.
wanna buy mine?