It came with the car when I bought it. I don't think I would have bought it after I bought the car. I do like it, and it was one of the things or mods that made me decide on that car.
Worth it? I don't think there is anything that the hood adds to the car that would be worth it, but if you like the looks, and that it does cool the engine compartment, and it is a little lighter than the stock hood, then you may be able to decide whether it is worth it or not. It is really a personal thing.
I do like it myself.