Has anybody installed this in their coupes...and do they work?
 

Any other less expensive choices out there?

Thanks in advance.

https://www.ecklersmbzparts.com/1976-mercedes-benz-seat-belt-holder-107-chassis.html

I don't think it would work on a coupe. You wouldn't be able to fold the front seat forward to access the rear seat.

Mike is right but in my case at least, the back seat is almost always unused. You can slip the belt out of it easily to fold the seat if you need to. But ..... what an outrageous price to pay! I don't remember paying anything like that for those simple plastic extrusions. Found them on ebay many years ago.

Ha Ha Mike! I am 6'2", my seat is all the way back. The only thing that can fit back there is a bag of groceries....maybe.
Whatever is back there, I grab through the open window:)
I'ts annoying reaching back and hunting for my seat belt every time I get in the car.
I see what you're saying though.
Thanks.

Do you have retracting belts or Kangol static 3 point belts? If you have 3 point Kangol belts there is a little hanger that you can get that they hang on on the B-pillar.