T-Mobile's unlimited data service has been $20/mo...
... ever since its release. It started as GRPS, recently been upped to EDGE and still the same price. I use it everyday in the cab when I come to work. It's fast enough for me, perhaps a little more bandwidth couldn't hurt but I don't want to pay more than $20-25 per month, even if it's 1Gb/s - I don't need more than 100-200kb/s on my mobile phone.
