First, decide what brand of paint you want to buy, then start watching for sales. Sears, home depot, lowes, walmart, kroger, kmart, do it best, ace hardware, etc. all have their own brands of paint, as well as name brands. Walmart doesn't have sales, so their paint will always be the same price (the dutch boy paint they carry is good). Most other stores have sales regularly. If you subscribe to the newspaper, watch the ads as they come. Or like the previous poster said, sign up at sherwin williams' website to get email notices of their sales. All stores (except walmart) have sales all the time, so just watch them until the price is comfortable. Sometimes you have to send in a rebate. If you don't have one, a subscription to consumer reports is a good idea. They test everything, including paint, and give objective ratings. You can get an online subscription for less than $20, and look up anything. Good luck!