Amazon has the 4oz ALCON Opti-free Puremoist Multi-Purpose Disinfecting Solution for Contact Lenses for $4.49 - 20% off coupon (check "Save an extra" box, eligible on first S&S order for this product) - 5% off with Subscribe & Save (can cancel anytime) = $3.37 with free shipping on $35+ or with Prime. Compare to $5.24 at Target.