Hi Ttaylorr,
Yes, you can sell the disenchanting mats in the AH, and the best thing about it, is that enchanting mats does not have a deposit price. So if you get your auction back expired, you won't lose any deposit fee! And for the prices, search for it and check what other prices the other people have set. Set it just a bit lower, not much as that will lose you too much money. If you have the lowest price going, you'll probably be the first one selling.
Good luck!