Mez, you can get shafts through Rogue River, 3 Rivers, and plenty of other places.

I am about to order some shafts from Raven Archery. I am told very good things about their shafts. I can let you know what I think of them when they get here.

Some of the others on here will chime in soon, and give you the nitty gritty on arrows, Im just a green horn.

One word of advice, dont buy cheap shafts. I bought a couple dozen shafts from a local archery shop, and the arrows couldn' t be farther from being matched.
I have as much as 100 grains weight difference within the same dozen arrows.
Kinda hard to get everything working right when things arent even close to being matched.
Good luck with the arrows.