Won't cost much if you have a router, table saw, band saw, v-groove bits, hinge mortice bit, scrap hard wood (used to make footing jig), and some basic shop skills. if you have all that, your only expense besides the wood shafts is the wood you plan to use for footings and glue.
The Renfro's (Gary and Connie) put together an awesome DVD on arrow footings. I suggest you buy the video and watch it a couple times before you attempt footing. They have some very hi tech jigs they have built, but with some inginuity, you can come up with some pretty handy creations of your own. I have, and I visited a few arrow shops to learn other ideas as well.