I needed a visa to Singapore. Found this online. They have standard fee (5 working days) and fast fee (2 working days). in fact, all visas are processed within 1 working day by the Singaporean government ( for SIN 30).
after i paid fast service fee, it was demanded of me to pay SIG 90 for airport transfer (otherwise the visa wouldn't' have been proceed). it was right before F1 in Sep 2017. i had no choice (no time).
visa was valid but i was coned for more than it should have been.