Cost is a very big determinant in passive investing performance but so is the behavioral aspect of investing
The head of retail investors for SGX came up with an article that you can build a stock portfolio with $100 per month.
I believe she is referring to the regular shares savings plans POSB and OCBC have introduced last year.
I came up with a good guide here for those who missed the article. It talks about how much is the return, the volatility the risk, how to go about investing in it the long term, and the psychological mindset that you need to have.
I thought its good for them to highlight it, and perhaps they are the only one with the data to say something like the following, since STI ETF probably have only 12-13 years of listing …