I'd certainly consider buying a stolen/black market/grey market EpiPen at $300 if I needed one and the alternative cost $3000. The shelf life is 13-18 months, so that's a recurring cost, and I'd like to have more than one (perhaps carry one on my person and store one safely at home). I'd look for factory-sealed, tamper-evident packaging.
I'm privileged to be able to even consider spending the $3000 (I don't have severe allergies, so haven't actually made this decision). It's not at all ridiculous that someone on a tighter budget would make the same decision if it was $30 vs $300, and might make compromises on the QA. And "just go to the ER" doesn't cut it: regardless of the cost, that could take hours, while you may only have minutes to spare in the case of anaphylactic shock. You take the injection AND go straight to the ER, it's not an either-or thing.
I'm privileged to be able to even consider spending the $3000 (I don't have severe allergies, so haven't actually made this decision). It's not at all ridiculous that someone on a tighter budget would make the same decision if it was $30 vs $300, and might make compromises on the QA. And "just go to the ER" doesn't cut it: regardless of the cost, that could take hours, while you may only have minutes to spare in the case of anaphylactic shock. You take the injection AND go straight to the ER, it's not an either-or thing.