dude, no site is trustworthy except amazon fulfilled orders where you are fully protected.
It depends on sellers. I have been using ebay from 5-6 years & sellers with more than 100-200 ratings & 95%+ positive ratings are really trustworthy. I have not purchased for more than 1500Rs, but all my orders have been very good.
If you want I can give you number of a seller from whom I have purchased from 2-3 times. You will save a lot & get good product too. He has 100% rating on ebay.