Right now on Zulily they have a massive selection of 6-Piece Sheet Sets for a Steal- Only $19.99! There are tons of different materials and prints available!
Shipping starts at $5.99 and generally goes up $1- $2 with additional items. Consider making one order, and then go back and order another item and shipping should be FREE since they offer free shipping for almost all additional items ordered by 11:59 PM that same day. Some larger items may be excluded for the free shipping offer.