Amazon has a 2-pack of 50-oz. Tide High Efficiency (HE) Laundry Detergent Bottles (Original Scent) for $12 - 5% off with Subscribe & Save (can cancel at any time) - $1.50 off coupon (Click "clip this coupon") =
$10 with free shipping. Contains more active ingredients and less water, with acti-Lift formula that lifts off dry stains.
Two-Pack Tide Stain Release Duo Pac In-Wash Booster (18-count bag) = $11 shipped w/ $3 off coupon (click "Clip this coupon")
Tide always goes for sale dirt-cheap. And I'm am SO frickin' allergic to it.
Life just ain't fair.
Guessing this deal has expired as the plain Tide is no longer offered on the linked page at Amazon.
50 oz is 32 washes. There is a more concentrated Tide yielding about twice as many washes, but its not this one.
Price: $17.98
I prefer the "Free and Gentle Unscented" Tide in the white bottle. The scented Tide makes me sneeze.
You've got to be lucky to find these 2x50oz for $10 and even then, it's usually only the HE Tide. By the time Ben Bargains publishes the deal, it's usually gone.
At their regular prices of around $17-$18 for 2-50oz bottles, Amazon can't compete with big chains stores like Walmart where they sell for $11.30+tax for a 100-oz bottle (YMMV).