I found an Audi A4 passenger seat on marketplace for $85. It was brand new. It’s always the drivers seat that wears out. Run a 12v wire and you get full function seat. I don’t have the heat hooked up yet. All I need is 3 position knob or lo-med-high buttons.
My drivers seat is from a Chevy avalanche like the previous poster. My seats don’t match but they’re both black leather. Nobody notices.

Dave