Sitting in DFW waiting for the plan, pull up the AirPort and it turns out there are two different WiFi networks up, Wayport and T-online, I point the laptop at Wayport and it conveniently lets me buy a day's access for US$6.95, I only use a couple hours but think I got my money's worth.
It seems blindingly obvious to me that for something this easily commoditized - there already two competitors on the scene, in DFW at least - prices are inevitably going to fall.