While shopping for a room board, I came across this great deal on pillow covers! It's the Nena Von line, available through Amazon! I've seen this seller on Etsy as well. All of the pillow covers pictured are $25 to $35 dollars each, a great price.
Be sure to fill your covers with down pillow inserts, they look the best. Sears has great prices on down pillow inserts, and if you're local, Mesa Sales has them even cheaper.