Considering getting a soda fountain for my house…

I get a double gulp from 7-Eleven daily right now. I get Diet Coke. It’s my one true addiction. I don’t drink coffee or anything else caffeinated. I don’t drink sugar.

after 711 discounts, I spend roughly $450 a year on soda. +-50 depending on how often I am given a free one from a generous clerk, or I go to a more expensive 7-Eleven that charges me for a large refill versus small refill. I always reuse my cup.

I understand that the initial investment is probably around $1500. But that means in three years it would essentially pay for itself minus the cost of syrup.

Has anyone else done this? I’m just now thinking about it and haven’t researched it at all.