I'd pay $200 a side in a heartbeat.Took me three years to find a near NOS set of 71 vert rear interior quarters and yes, they do not have the seat belt retractor cut outs and because my car did not have the interior upgrade (maybe referred to as the convenience option package, can’t recall right now); no passenger side ashtray either. The only downside is that they are a beautiful vermillion, and I have a white interior. I will have to repaint them one day. These specific interior panels are near extinct in very good condition today and the aftermarket is junk in my experience. If you find a pair, price may not need to be a consideration... Again, I was fortunate in this regard, I won this pair on ehay.... $200 including shipping North of the Border! But don’t worry, I have overpaid for far too many parts these last few years... so the odd “score” is a nice change. Good luck in your search.
My interior is white too. For now. If I can't find white, I'm building a black interior until I can find white panels. I have heard that Just Dashes does a good job of repairing the quarters. I need to get the dash pad redone so I will have them take a crack at the panels at the same time.