Amazon has the 4-Pack 28oz Method Foaming Hand Soap Refill (Pink Grapefruit) on sale for $28 - 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) = $20 with free shipping on $35+ or with Prime. The Sea Minerals option is $21.