New price low. Amazon has the 0.5oz Differin Acne Treatment Gel w/ 0.1% Adapalene (30-Day Supply) for $11.99 - 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) = $8.39 with free shipping on $35+ or with Prime.