N.Y. Comp. Codes R. & Regs. tit. 9, § 5320.11
Each device on a link shall have the same probability of winning the progressive, adjusted for the denomination played. For example, the probability shall remain the same for multiple-denomination games based on the monetary value of the wager (e.g., a two-coin $1 game has the probability of 1:10,000 and a two-coin $2 game on the same link has the probability 1:5,000).