Rates start at $20 for 2GB of data up to $95 for a 22GB data bucket. The regular Simple Choice rates start at $50 for 2GB, though T-Mobile has a prepaid plan that costs $30 for 5GB of data, 100 minutes of voice and unlimited text. These options are only available for subscribers with GSM devices and BlackBerry users who have either a BB10 device or a Priv, which runs on Android. We pinged T-Mobile for confirmation, but if it's true that these plans are launching on the 30th, we'll hear about it from the carrier itself very, very soon.