have been reselling alot of my device's on Cashify they are fast, efficient and trustworthy... also I have got a better price on cashify compared to the exchange option available on Amazon or Flipkart UPDATE- It's been almost 2 years they are still the same. But recently have noticed a lot o haggling in price quotation , it's like the vendor's tries to find minute mistake in every product ...Not happy at all better go for exchange ...