it is 20 reward points for 100 and each reward point varies from 0.10 to 0.25. Value back can be derived depends on items we redeemed, since it is not direct cashback it assume ~3% (most of the famous vouchers available at 0.18p below only).
and redemption charges are 99+GST = 117, so have to accumulate and redeem at one go for better reward rate (2 years for expiry).
and max. spend in a month is 5000 for groceries (1000 RP limit).
Ex: in 2 years, 1,20,000 (5000*24) spends = 24000 points.
= amazon 0.12p = 2880 - 117 ~ 2.3%.
= lifestyle 0.15p = 3600 - 117 ~ 2.9% (note: lifestyle vouchers available at 5% using any card most of the time).
= pizzahut 0.25p ~ 5%.