I think I got about $300 for my 1970 hardtop when I sold it. I had a lot of fun in that car. My favourite old Valiant was my AP6 V8 though.
I drove an old S model for a few days back in about 1980 when somebody traded it in at the dealership I was working at. You could fit about 15 people across the front seat, and it was about 15 turns lock to lock, but it got a lot of attention even back then when it was just another old car.