Mind you, this is kind of a stupid amount of dishwashing liquid, but: Right now Amazon has this 6-pack of Free & Clear Seventh Generation Dish Liquid available for just $15.54—which is already a perfectly excellent price—but you can also buy via Subscribe & Save for up to another 15% off and free shipping, and there’s a clippable 30% off coupon. That means you could end up with 150 ounces of environmentally-friendly (yet highly rated, still actually-cleans-the-dishes) dishwashing liquid for just over $10 shipped.

If you’re not in need of dish liquid, the same coupon is available for their Free & Clean hand soap. This stuff is normally a lot more expensive (why oh why do products with less in them always cost more, universe??), so if you use either one, this is definitely the deal to beat.