New price low. Amazon has the 36-Count Differin Acne-Prone Skin Patches with Salicylic Acid and Centella for $6.42 - 25% off coupon (check “Save an extra” box, eligible on first S&S order for this product) - 5% off with Subscribe & Save (can cancel anytime) = $4.49 with free shipping on $35+ or with Prime (extra 15% off for 5+ subscribe and save orders).