For pickup only, Sears offers the Craftsman Adjustable Pattern Sprinkler for $8.99. That's $8 off list and the lowest price we could find. It features a 5,000-square foot coverage area and flow rate of 5.75 gpm.
There is a 10 percent off coupon of Garden items (it has a pic of a mower on it) if you sign up for the shop your way rewards you just have to click on the look for coupons when you go to check out. Brings it 90 cents cheaper ;)