This reminds me of a (dirt cheap - about 0.5€) scratch ticket available when I was growing up. The number of winning tickets, as specified on the ticket, was 51%. The 2% up from the usual 49% meant you won more than you lost. The smallest prize was about twice the cost of the ticket. We would run to the store on our lunch break, buy a couple of tickets, rinse and repeat a few times, and have money for whatever food we wanted for the day.

(and no, you wouldn't be able to farm them - the store only carried X amount of tickets, and they usually sold out quickly)