Coupons.com has a coupon for $1/1 Palmolive or Ajax Dish washing Soap. Go here and use zip code 85712. You can print it twice. You can almost always find the Ajax soap on sale for $1, and recently my Target has had Palmolive in the $1 Spot section for $1. Thank you to Sia at Centsible in Seattle for this great find!
There is also a $1/1 Target Coupon (Peelie found on product) out that would pair up nicely with this. Its for a $1 off Polmolive Pure + Clear. (Newer kind) That is usually under $2 so free with Q.
HERE is .75/1 Q offered from the Polmolive website to use too for cheap soap!