"Can you actually buy an Android phone for 80 dollars"
Yes, unsubsidized. You can also buy Android tablets for $120. They're just not very good. Also, none of them will have brand names you'll have ever heard of, or they'll have the logo of some telco on them.
The cheapest phones by LG and Samsung cost $120, the LG Optimus P350 and the Samsung Galaxy I5500 (both SIM lock free, unsubsidized).
(Serious question, I mean no disrespect!)