Amazon has 84oz Tide Liquid Laundry Detergent (Various Scents) on sale when you select a quantity of 4 and checkout with subscribe & save. Shipping is free.
Ultra Oxi 4 for $51.88 - $10.52 - $5 - 5% off = $33.77
Febreze Sport 4 for $51.88 - $10.52 - $5 - 5% off = $33.77
Clean Breeze 4 for $51.96 - $10.60 - $5 - 5% off = $33.76
Free & Gentle 4 for $51 - $9.64 - $5 - 5% off = $33.81