Amazon offers a 40% coupon that’s clipable on product’s page for several Similac infant formula:
3 count, 36 oz, Similac Pro-Advance Non-GMO Infant Formula with Iron, with 2′-FL HMO, Baby Formula
3 count, 34.9 oz, Similac Pro-Sensitive Non-GMO Infant Formula with Iron, with 2′-FL HMO
3 count, 36 oz, Similac Pro-Total Comfort Infant Formula OPTI-GRO, Non-GMO, Easy-to-Digest, Gentle Formula, with 2′-FL HMO
Combine with 5% or 15% S&S for extra saving. This is even better than the 30% coupon that has been offered multiple times in recent past.