I found this and thought it was a good deal (especially if you were interested in trying G diapers.) 30% off plus free shipping is pretty darn good!
Target has 20% off diapers, wipes, and other baby care products when you purchase 3 or more cases marked by "Buy More, Save More" icon with an additional 10% off coupon S6BP388J available and free shipping on $50+ orders (before any discounts are applied). Thanks Chandi
Note, diaper quantity varies by type of package and size. Lower "from" price does not indicate better price per unit. Make sure you check sizing and quantity information for each item, as economy pack provide the best per-unit price