Yea, three years ago when my wife and I both got the current iPhone 6S models we did the payment plan pricing. Why they heck not, it was 0% interest and only a rounding difference made the amount a penny more buy paying it over the contract.
We could have just paid for the phones, but there was no logical reason to.
My long time boss at the photolab bough one of the original Motorola brick phones. It was $1700 for his, 20 cents per minute to make or receive calls. Nothing but talk, no data.
This is a later knock off.