Amazon has 146-Oz Tide Laundry Liquid Detergent (various) on sale from $14.94 when you clip the $4 off coupon on the product page and checkout via subscribe & save. Shipping is free w/ Prime or on orders $25+ or $35+ (minimum requirement varies by location).
Available ( prices after clipping $4 off coupon & 5% off w/ S&S):
- 146-Oz Tide Original $14.94
- 146-Oz Tide Ultra Oxi $14.94
- 146-Oz Tide Free & Gentle $14.97