How much is a new 2 year contract with Verizon?

-I have an iPhone 5 with a two year contract that has not expired
-my friend got me an iPhone 6 plus that I need to activate
-how much is it to end my current contract?
-how much is it to start a new contract and activate my iPhone 6 plus?

My iPhone runs out of power quickly?

My iPhone dies in power pretty quickly. It can be 100% at the start of the day, then after a few hours of use, it's down to 40-50%. Then 0%.

Is there something wrong with my iPhone?

Added (1). Ken D: Never heard of Sarah P, but I'm from Australia. Lol