Okay I will call up the seller, but why did you emphasize the manufacturer warranty thing?
/Scratching my head
That's because the price is too good to be true. HTC Desire doesn't sell for so low anywhere in the world, without a contract. These price points are available only if the phone has been purchased outside India in some market where these are sold cheap. Remember the dealer has to keep a margin. Even assuming a zero margin, he has bought it for real cheap from somewhere, but definitely not from authorised HTC resellers in India as that would mean he would have to pay far more than 15K just for procurement. In short, that means the piece is not bought in India, and hence is not eligible for HTC's Indian warranty.