To make you first dozen arrows you can figure on spending $18-20 for a dozen quality shafts that are matched in spine and weight and for another $3 you can have the shafts cut to length and tapered on both ends

You will also need:
$29 for 100 precut feathers
$15 dipping tube for gasket lacquor
$25 quart of gasket lacquor (finish)
$ 5 stain if desired
$30-35 for inexpensive fletcher
$7-8 for fletching tape [sticks immediately, no waiting for glue to dry]
$ 2 duco cement for nocks
$ 3 hot melt for points

Of course you need a heat source to use the hot melt. I don't do any fancy cresting because I basically am not handy. My arrows fly well and that's enough for me. Feathers are what drive the price up.