Still Polking around I found a site that sells Dorman and Replacement compay Manual Window Regulators.
If cost is the issue it might be Cheaper to buy Manual Window Regulators and pay Merceds for the Window Cranks/Handles.

I forgot to comment that on the rear I replaced that had the Bad Teeth the Teeth could likely have been built up with Welding but I did not know what shape the original teeth looked like and it would have been a trial and error pain to get the teeth cut correctly.
But if it meant not having to pay $500 I maight have done that.

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84 300D, 82 Volvo 244Gl Diesel