Amazon has GoodSense Advantage Milk-Based Powder Infant Formula with Iron, 23.2 Ounce for $3.45 or less, after clipping the 40% off coupon, and checking out via Subscribe & Save.
Also Available.
GoodSense Advantage Non-GMO Milk-Based Powder Infant Formula with Iron, 23.2 Ounce $3.50 or less