Siva, If indeed what you are reporting is a fact (they are charging 3x more), then irregardless how good they are, I think we should avoid this workshop.
I once got a quote for an E46 rear absorber mount from Bennie Auto in Sunway Damansara. They charge RM135 each. So what I did was call up Bavarian Auto and have them send it over to me at Bennie Auto. BA charges me RM68 each.