I have purchased few books, electronics items, mobile phones etc. Always I found their service are very good. If I book something today evening, get it delivered by tomorrow morning.
They processed the orders even in the mid night. Excellent service, please keep it up.
I do not have any experience on after sale service as product qualities are good and I never had to call them for a refund. But they replaced an expensive camera lens without asking any question, when found defective after delivery for one of my close friend. They even send an expert to his home to test and verify the lens. Impressive, isnt it?