Amazon has the Listerine Fresh Burst 1-Liter (33.8 fl. oz./1 qt. 1.8 fl. oz.) Oral Care Antiseptic Mouthwash for $5 - $0.98 off coupon (check green "Save coupon" box) - 5% off with Subscribe & Save (cancel anytime) = $3.77 with free shipping on $25+ or with Prime.