T-Mobile's on again, off again free refill deal is on again. Get a free $30 refill card with some but not all prepaid phone purchases on t-mobile.com. The offer applies to both new and existing customers.
Eligible phones include the LG dLite flip, Samsung t249 slider, Samsung t369 and Comeback QWERTY sliders, Samsung Gravity T touchscreen QWERTY slider and the T-Mobile Comet Android phone.
This deal pops up from time to time on T-Mobile but doesn't usually last very long so don't delay if you need a new phone and want to save 30 bucks.