Armrest Replacement for 93 300SE Wagon

Does anyone know the best approach to replacing the driver's seat armrest? I took it to a dealer who told me I needed to replace the whole seat! I tried to have the armrest welded back onto the mounting bracket but it could not withstand the weight and broke off again.

Any ideas would be greatly appreciated.

[acha3]

check at ebay, they are selling a pair of seat at no reserve