T-Mobile site doesn't seem to tell me it.. =.=a I'm just curious since I own an iPhone 3G and want to get unlimited texting on it. If you can list the pricing then thank you.
It's bundled now.
For individual it's $10 on top of the plans with Even More Plus. So 500 minutes alone is 29.99, with text it's 39.99. And so on..
On family plans it's an extra $20 ($10 each for the first two lines, then it's only the $5 add-a-line charge for the other 3 to share the minutes and have unlimited messaging)