New price low. Amazon has the 4.5-Oz Mucinex Sinus Saline Nasal Spray & Sinus Rinse for $8.99 - $3 off coupon (check “Save an extra” box, eligible on first S&S order for this product) - 5% off with Subscribe & Save (can cancel anytime) = $5.54 with free shipping on $35+ or with Prime (extra 15% off for 5+ subscribe and save orders).