Annual price question?

Hello I am asking for a friend that is thinking getting the annual professional plan that can stream to 5 channel.

But I am questioning their offer is 470 yearly with 2 month free. Would it be 14 month in total or 12 month and the actual 2 months aren’t free because the math 39x12=468.

I don’t want my friend to spend that kind of money yet before commits to something she will regret.

Has anyone actually know or have gotten the yearly plan. I would appreciate any information.