Total prize pool divided by total ticket sales — sometimes called RTP (return to player).
NY scratch-off payout rates range roughly 60–75%. Higher-priced tickets ($20–$30) average ~73% payout vs ~63% for $1 tickets. Payout rate is a structural property of the game; remaining EV moves with prizes claimed.
Data sourced from nylottery.ny.gov and NY Open Data. Independent, non-commercial project. Play responsibly — NY Problem Gambling · 1-877-8-HOPENY.