Pardon me... you can actually get Chamois at the Bukit Batok Auto Testing shops... the quality is not bad, made from cow leather thus thicker. However there are 2types in SG, the sythetic type and the leather type. Look for those leather ones.
The bigest one, ~ 16"x16" is selling for $24, you guys can buy one piece and share it around. Smaller pieces is selling ard $14-$18 depends on size and made each.
I have been using Chamois since 12yrs ago, currently using it to clean my lens, polish my piano, polish my dad's car, etc.