Recaro does make seats for MBZs. Some of the after market seats need adapters.
I guess if it were me, I would see what the money total is vs have the seat(s) repaired.
Doing it yourself isn't really too bad a job. I've done it: Springs (lower frame), cushions etc.
'03 E320 Wagon-Sold
'95 E320 Wagon-Went to Ex
'93 190E 2.6-Wrecked
'91 300E-Went to Ex
'65 911 Coupe (#302580)