It is not like other lottery programs, we'll buy a lottery ticket in a physical store after you placing an order and then give your money back via blockchain if you winning a reward.
anybody can go out and buy a lottery ticket for themselves with their own money without needing a third party to do it for them. also without the risk of involving another person in it! then if they won the lottery they can simply buy bitcoin with the reward if they choose to!
so what is the point of your service?