If you're willing to take a dozen at a time, and can live with the inventory (style and size) they have on hand, Sierra Trading Post is a place that you can pick up flies for as cheap as 36.5 cents a piece ($4.38/dozen). If the flies are on sale and you have one of their 45% off codes, that's where the price lands. So far, my only disappointment was some size "6" cicada flies, which were more like 1/0. They will still work for a big winged night bug, just not a normal sized daytime cicada. My wife can attest that my fly boxes are now full, thanks to STP, and at that price, I've been able to pick up a few saltwater or other non-typical flies to throw into my freshwater arsenal. I agree with afishinado that the components alone will cost that much, and I can't justify tying some of the more complex patterns, when I can buy them for less than the components alone (and that assumes that my time is donated as a labor of love). The only downside that I see is that I now have a dozen of some of the non-typical flies to store, where probably two would suffice. But hopefully I can catch fish on some of them and they will become go-to flies.