http://www.verizonwireless.com/b2c/store/accessory?action=selectPhone&phoneId=5723&archetypeId=12848
it will say $39.99 until you add it to your cart. then it goes to $19.99 with free shipping. it's a 1620mah so it's about 25% more powerful than your stock tbolt battery. PERFECT if you want an extra half hour of use time and a few more hours of standby, without bulking up your phone.
i'm guessing this is just today? but it gives no details. doesn't even show the sale price unless you add it to your cart.