ABS / Trction Control Modual 95-SL 500

Hi there the ARS Light coms on once in a while, and I had a guy look at it. He told me that it was the ABS Modual. I hve lloked everywhere Ebay etc etc, I am having a really hard time finding it. Is it called something else ? Where would I have the best luck finding one?
Can it be reapired ? Who can do it ? What can I expect to pay?

Thanks for your help guys, have a good one
Marcus