Soooo, they're just cheaper Rhinos? I don't see why a transport would be broken or any trouble at all considering it's... well a transport.
And again, how cheap are they?
55 points if i remember correctly.
And they're trouble because Razorbacks all get weaponry and are still vehicles, so they'll be able to get a BUNCH of rounds off before you can bring 'em down. If you unload your units as well...