Always bargain shopping!

So, now that I am on a tighter budget these days, I am always interested in bargain shopping! I love the look of men's polo shirts and am always looking for good deals! They go with just about anything and are casual enough to wear around the house and dressy enough for something like church. For men's wear, it is polo shirts and button down shirts that I am always hunting for. What is it that you are typically looking for when shopping for good deals?