T-Mobile: Free $50 refill card with select prepaid phones

T-Mobile offers a $50 refill card for free with the purchase of select prepaid phones, as listed below. Each is among the best refill bundles we've seen from T-Mobile in recent months. (We saw several phones with a $30 refill card in December.) The available phones, all with free shipping:

• refurbished T-Mobile Comet Prepaid Android Smartphone for $99.99
• refurbished LG Optimus T Prepaid Android Smartphone for $129.99
• refurbished Samsung Gravity Prepaid Android Smartphone for $159.99
• LG Optimus T Prepaid Android Smartphone in Titanium or Black for $179.99
• myTouch Q Prepaid Android Smartphone for $279.99
• T-Mobile Sidekick 4G Prepaid Android Smartphone for $329.99
• Samsung Exhibit II 4G Prepaid Android Smartphone (pictured) for $349.99
• refurbished Samsung Galaxy S 4G Prepaid Android Smartphone for $349.99