What is the profit in the following ad?

Pay just Rs 399 for an instant chance to win Samsung Galaxy Tab 750 worth Rs 40798. You either win or we refund 100% of your money!

Most likley it's a 'Pyramid' or 'Ponzi' scheme scam .....

... or they could just be plain crooks = collect the money, tell everyone their Galaxy Tab is 'in the post' and keep collecting for a couple of years or until the Police call ..

Source(s):

en.wikipedia.org/wiki/Ponzi_scheme