Thank you for mentioning adrenaclick. Generics have been completely missing from the public debate. While epipen price gouging is very real, and a problem, there is one short term solution for allergy sufferers: demand an Rx for the generic. They are under $200 (source: checkyourmeds.com). Vote with your wallet!!
Looks like the differences are: extra safety cap and Epipen brand has an auto-retracting needle.