I have a strategy for deciding which scratch-off ticket to buy. Colorado gives me the following information:
1) payback %
2) probability of winning the top prize
3) how many top prizes are left
Ideally, I would also like to know how many tickets are left, but Colorado does not give me this information.
My rule is:
1) payback % must be at least 65%
2) probability of winning the top prize must be better than 1 in 1 million
3) all top prizes, or almost all of them if there were more than just 3 or 4 to begin with, must be left
Rule 1) eliminates the $1, $2 and $3 tickets. I'll buy four $5 tickets, or two $10 tickets, or one $20 ticket. $20 is my limit.
Some of these games have half or less of the top prizes remaining and haven't been around long. I don't know if the players were just really lucky or if people bought a lot of tickets. It makes a difference in the odds of me winning. Because Colorado doesn't tell me how many tickets are remaining, I skip it. I could figure it out if they tell me how many winning tickets were redeemed for any prize, not just the top prize. They do for PB and MM, although that's not necessary since those are draw games where my chances of winning have nothing to do with how many other people won.