My wife an I have been doing creative couponing, and we've paid maybe 10¢ to 20¢ per bottle of dish washing soap. We have 8-10 bottle wating to be used. Most all of it had been purchased at Wallgreens or CVS. This is all taking advantage of sales, coupons and catalinas in the proper order.
I have even purchased some tubs Oxyclean for less then $1.00 through this creative coupon method.