This question has been asked before, here: https://electronics.stackexchange.com/a/263366/199668
But since it's been almost 5 years since that post, does anyone know any substitutes for the mentioned transistors? I'm attempting to make this circuit:
I can't find these transistors on Amazon, and I don't want to wait 2 weeks for one to arrive elsewhere. Also why are they so hard to find today?