$150 with discount or coupon is still way too expensive. Where I live in Europe (Belgium) pharmacies sell the EpiPen for just $50. No need for a coupon, that's the regular price. It's even cheaper for some patients.
Put another way, if I was working minimum wage without insurance and no other income (12% tax bracket), I'd need to work 13.6 hours to cover the drugs for that one condition, 34% of my take home (roughly, I didn't include state tax, social security, etc.). Where as one person I would have been above the poverty threshold of $12.14k in 2018, now I would effectively be below it.
This is why so many people who don't have steady jobs (e.g., the gig economy) have to choose between drugs and food.