The carrier in your link looks fine. However, I think it is inexpensive because it doesn't have the actual roof racks that attach to the roof of your car. This just clamps onto your existing racks (if you have them). Which ever style of carrier you choose, you'll need the racks to attach the carrier to.
I think my roof top carrier came from a sears sale, but crappy tire is a good place to look too. Just make sure you measure your board (or the largerst board of the ppl you ride with) a lot of the roof top carriers are too short for snowboards.