"Prescriptions here are 5 bucks."

That's the case here in Ontario too, as long as you're under 25, over 64, in hospital (actually, free in that case), on social assistance, or receiving home care. Otherwise, you have to rely on private insurance or the last fallback, the Trillium Drug Benefit, which has a maximum co-pay of 4% of your last year's family income. It's an awkward mish-mash that they keep promising to simplify.

The important point in both your case and mine is that the drug has to be in the government formulary to cost $5 (for you) to to be covered (for me). My Erleada is in the Ontario formulary, but Orgovyx isn't, yet. I'd willingly pay the CA $323/month (US $215) to avoid going back to Firmagon, but fortunately, my oncologist managed to enroll me in the Orgovyx patient-access programme, so it costs me $0.