Question about Apple iPhone 11 Pro Max

I was looking into getting this phone with a subscription extension but I'm not sure how much it will cost me. It says 129 per month but when I get to the end of the conclusion on your site it tells me that my subscription is 6o. I have been using it for a long time and it is very easy to find out how much it will cost me, but when I get to the end of the conclusion on your site it tells me that the out of my subscription is 6o.- per month and that the phone costs me 0.- so if I take it would it only cost me the amount of my monthly subscription?