I brought one(150 bucks)Transferred all the guts over and it is great,We sit/stand on it and it seems ok,A friend loads his motor bike on his and also no probs,.
Put it this way we were going to spend more than that to fix the tin worm in the other.Fit was great and had no probs fitting new rubber in to seal it.Top gate fits to it also.
This is my own personal experience with them and I would not hesitate in doing it again.

Cheers Kiwivan