Archerus Knights Hood and other parts

I was recently blessed with a Transmog scroll and I was thinking about transmoging the Acherus Knight's hood. The problem is that as the cheapskeet I am, I sold the hood when I was lvling. I was just wondering if its possible to obtain it again via a quartermaster or something.

If you sold it,the only way to get one is buying it from the store for coins.The vendor with the Acherus set was intruduced in Cataclysm.