Just saw more Epipen Congressional testimony. The actual unit cost of the Epipen (whether branded or "generic") is around $67 USD. Assuming that this cost were not overly inflated beyond actual overhead and unit costs, in order to be sustainable, a reasonable retail price without distributors would be $134 USD... with distributors $200-238.
That said, the more downward pressure from competitors (commercial or nonprofit projects), the better for customers; especially where a monopoly existed, it's rational to for customers to band together and attack excessive hegemony.
Enteprising folks need to jump on this to sell this as a kit (w/ or w/o the medication).