The prices on their mobile offering were too high IMO since I can legally tether/hotspot with TMO for a modest daily fee. But I kicked the tires of their 500MB offering anyway and was pleasantly surprised how well it worked (and it supported Linux out of the box with no black magic). I was not happy seeing $1 to $2 monthly charges when the device was sitting in the drawer for months. Seems like once I exceeded my free threshold they wanted to top me off every month, even if the device had not even been used. Rather than quibble I returned the device for a refund.