I have the Kodiak 6' medium duty. It sounds like you may be looking at the heavy duty for that price. It should have a decal that says HD if that is what it is.
FWIW, I paid $500 for my 6 footer less than a year ago. I should point out that they are built locally (East Tennessee) and the dealer I bought mine from picks them up at the factory himself, so there were no trucking charges to run the cost up.
I like mine a lot. It is much better built than the KK models, in my opinion. I have had no trouble with it.
SnowRidge