Go here to print your $5/$25 purchase at Walgreen's. I tried to get those darn Bayer and Contour meters last week 4 times and they were out of stock. So was the ecotrin and the hair dryer. And I started looking on Monday! Your $25 must be after coupons though YMMV because at my Walgreen's they usually scan it in as soon as my total hits $25.
Hip2Save has a great list of the monthly and weekly deals here. Check them out!