It's not the prime ministers taking the money, it's used on Singapore
The tax is not really high, so yeah, it's fair. Singapore's tax is 7% in terms of GST which is quite reasonable. Let's say i buy a GS Card with GST included, which cost $10, I only have to pay an extra $0.70. That amount is not a lot compared to how much i payed for the original product. That's why Singapore tax is so darn fair.
Is Where can Singapore get money to run the country without tax, not money again.
If there is no tax system, where can Singapore get money for road repairing works or something. Where can Singapore get money to run the country without money? So, i think it's so fair.