Ok, I have a 2 year contract with ATT. I got the a737 phone, and I am o happy with it, I have my plan and my phone for about 3 months. I want to get the Phone PalmŪ Centro by next week, how much will it cost? I know I cant upgrade, but I really want a new phone. How much will it cost all in all?

http://www.wireless.att.com/cell-phone-service/cell-phone-details/?device=Palm%C2%AE+Centro+-+Glacier+White&q_sku=sku1190113