Of course this is expensive for what it is ... Anyway, I also bought a competitor and I must say that it is better on a relatively important aspect cooling. If you like me, a laptop where the air intake is placed under the laptop and right next to the air outlet while this support is quite large by his "empty" space that will thereby a good flow of air.
After, could have been better: - The rear edge coming to rest on the desk, I always feel that the support will slip and end up mobile earth ... - Where the front edge is wedged portable, sufficient for my laptop but just ...