OK, I found someone who can get into that estimator. Here are the estimates for a hypothetical male born in 1971 with a RA balance of $440,800. (Evidently that's for a male who just celebrated his 55th birthday this month and will fund his new RA to the current ERS before the end of this month.)
- Standard Plan from age 65: $3,410
- Escalating Plan from age 65: $2,690 (-21.1% versus Standard Plan payout)
- Standard Plan from age 70: $4,550 (+33.4% versus age 65)
- Escalating Plan from age 70: $3,680 (+36.8% versus age 65) (-19.1% versus Standard Plan payout)
Escalating Plan payouts grow at 2% per year for life. The exact payout figure could "wobble" a bit for both plans depending on whether and how much the CPF Board's actuarial projections differ from reality, but the 2%/year part (above any wobble) is guaranteed. All figures are in future nominal dollars and are not inflation-adjusted.
As mentioned, these payout figures can be increased simply by continuing to top up the RA every time the ERS is raised.