Oscar vs harmony test - which should I go for? Price diff is substantial!

Subsidised rates for my cousin @ KKH: Oscar@$170+ Harmony@$225 in April 2019. I went for my first scan and counselling a few days back and the relatively new counsellor (worked just a few months) confirmed that theres no subsidies for Harmony and price fixed @ $750 since she started working, even when i told her my cousin’s Harmony rate was subsidised. The difference of $525 is huge... not comparing with private rates. Not sure what had change that Harmony is not subsidised anymore 🤢🤢