Sony Handy Cam for half the price

Today, as usual I was going home after my work and stopped at an ATM to with draw cash. As I was standing in the Queue a young man approached me asking If I am interested in buying a sony handy cam which he can get from M.G Road Showroom and he offered me half the price of the original product. The problem with buying these kind of things are that they do not cover warranty and there is no bill for these things so better to buy from store.