It’s a lease, not rent. I don’t know the exact numbers on this but you can pay “rent” for two years and then pay like $300 (I don’t know what the right number is here) at the end to own it outright at that point. So at the end of the day you pay like $200 more than someone that buys it outright from the get go.
The upgrade program cost including the buyout is the exact same price as if you paid it all upfront.