Amazon has Tide Clean Breeze Scent with Actilift, 100-Ounce Bottles (Pack of 4) on sale right now for $40.70 with Subscribe & Save. Clip the $0.50 coupon (located right below the product description and price) to bring your total down to $40.20 or $10.05/bottle shipped directly to your house.
If you order this, don't forget to cancel your Subscribe and Save order once your detergent arrives, unless of course you want to continue to periodically receive them. Just because you order with the Subscribe and Save option does not mean that you need to keep getting these items. You can cancel your subscription at any time.