When you update a Phone with Verizon are all phones free?

I get a upgrade for my Verizon wireless phone in August. I was wondering if when you do get a upgrade is the new phone free or do i get a discount. I have a samsung realitty right now. My plan is the 2 year contract. The phone i want to get is the Casio G'z One Commano. Would that be free? or discounted? because rightnow its like 200 dollars or somthing.