Slightly off topic but creative

I want to create some lotto scratch cards for an experiment. These are all $1 cards. Have a card where like the normal ones where it a game and you are in suspense to see if your hand beats the imaginary people on the card but the top prize is $1000. Then there will be a card with a complex-ish math or vocabulary questions and if you scratch off the right answer you are guaranteed a prize of at least 25 cents and it goes up to $2500. And the last one is a very plain looking card with just a box in the middle with a question mark on it to scratch off and it is like a bottle cap saying you winand an amount or play again and it's prize would go up to $5000. I really think that the lower prize but more "exciting" game would sell best....