I was only 10 months into my contract so it cost me $165 to buy out. I figure the phone will be $200 with 2 year upgrade so I will be paying $365 rather than $550-600 outright like I was planning on doing.
Also pro-tip with there buyout you can also do green buy back program and get what ever your phone is worth back as credit. Atm the evo3d is 99.00.. so effectively the 165 would be 66 dollars + new contract.