Sears offers this Ultra Plus Powder Laundry Detergent 180-Load Box (17.3 lbs.), model no. SEA 9879, for $10.99. Plus, Shop Your Way Max members receive free shipping. (Not a member? It's free to sign up for a 90-day trial; otherwise, shipping adds $17.62. In-store pickup is also available.) That's $0.06/load, a buck under our mention from last week, and the lowest total price we could find. This detergent is rated for high efficiency use in all washer types.

Update: As a reader found, Kmart offers it for $9.99. Opt for free in-store pickup to avoid the $17.62 shipping fee.