The Internet is bursting with new that T-Mobile is ending grandfathered plans and forcing users over to its newer Value Plans. It's still too early to tell just how this will impact a vast majority of its users and the level of "evilness" is involved here, we should give T-Mobile the benefit out of the doubt given that it's been one of the more friendly, or less evil, of all of the major carriers.
It did acknowledge that for some users, it'll end up costing more but also with added benefits as well.
Personally, I could care less about added benefits like unlimited talk and text since I hardly use either. Come to think of it, only T-Mobile texts me about payment and account updates.
I'm currently on a $30 prepaid plan that offers 100 minutes of talk time. But get this. I also get 5 GB of high speed data.