There's a G.I. Joe's near me, but the cheapest fly that they sell is $2. I don't know if this is average for a fly, or if I just expected a piece of fuzz and metal to be less.
T.M.-I think that I will probably also fish only lakes, being that most streams in my area dry up every year.
Thanks everyone for your help. Now I've got another way to waste my money trying to catch fish.