Rajan Auto is a refreshing option over the firestones, autozones and the likes. Rajan and Pappu are honest and just sell you what is needed. My engine lights were on and they checked it for free and fixed the part required at the proper price (original honda parts). Its not a bad option to get repairs identified (free inspection coupons) at a firestone or pepboys during an oil change..and then go to them. I felt that they might not have identified a problem (not significant) if I hadn't told them.
Overall you should always try them before spending big $$$ at firestone or others.