Don't think it's considered a ripped off as I have checked the item prices before engaging them. I roughly know the cost if I were to buy the items myself. I have ran businesses in SG for decades before retiring and my prices and pm ain't low either. You need good pm to sustain a business and so do they. I can roughly estimate their pm and considered the time spent, item cost, professionalism, workmanship and quality of the setup, I don't see it as a ripped off. Anyway, they are a reputable car audio installer and I can see cars queuing at their shop waiting for installation.