This week Rite Aid has Purex Crystals on sale for just $3.99 each. Use a coupon and get them for just $1.99 each after coupons.
Rite Aid Deal
Purex Crystals $3.99
$1/1 Purex Crystals, exp. 2/28/13 (Rite Aid Flu Shot Booklet)
and use $1/1 Purex Crystals, exp. 11/4/12 (RP 10/07/12)
$1.99 after coupon