Farmer,
Don't know of a site listing NH prices. I looked myself when shopping and after quite a few hours/days of searching found that this site was the best place to ask about prices. I was looking for a small tractor (40hp) and not one of the big boys. Wouldn't hurt to ask about a specific model though, I've always been suprised what information the members of this forum can dig up through their contacts.
DaveV