We do alot of prepackaged food. Frozen foods etc. I look at the ads on sunday and mark things that are on sale that we buy regularly and that I know I have coupons for. That is when I make my list. Trying to make sure I minimize buying anything at regular price. The stuff on sale goes thru a rotation it seems. If it is on sale this week it will probably be on sale again in about 6-8 weeks. I try to buy enough to last that rotation. Also things go on sale depending on the season. Right now it is buns, beans, cook out things. In Oct/Nov it is stuffing, soup etc.