I am posting this from 30,000 above ground level thanks to Gogo Inflight available on select American Airlines, Virgin America and Delta flights (I am currently on American).
It’s $12.95 for the entire flight (and I got an extra 20% discount with a coupon from Gogo at the boarding of the flight). The connection has been very stable, disconnecting briefly only once during turbulence. I downloaded over 100Mb worth of files at a sustained 80kbs with peaks of 120kpbs.
I can’t wait for the service to be available on all flights!