Well, step-father, to be accurate. I've never even lived with him, I moved out when my little sister was born or thereabouts. And I still had a dad long after that, so that's why I don't call him dad or father. (This paragraph was prolly more for me than for you, tbh.)
But yeah, I used to think it was expensive, and it used to be, afaik, as you had to basically either buy and old drivers-ed car or extensively modify your own vehicle.
However, someone came up/allowed it to just be a pedal on the passenger side that's bolted on the floor and which then has a hydraulic hose going to the actual breakpedal. So all you have is a pinky-sized hose going between the seats. You can either just let it sit on the console as it doesn't bother anything or you if you really want, take some panels away and put it through there.