YMMV Double Coupon method. Amazon has the 11-Count Swiffer 360° Heavy Duty Duster Refills for $14.44 - $1.95 off (click coupon under one-time purchase option) - 5% off with Subscribe & Save (can cancel anytime) - 20% off coupon (check "Apply Coupon") = $8.88 with free shipping on $35+ or with Prime.