This Black & Decker Heavy Duty Impulse Sprinkler drops from $19.99 to $3.99 at Sears.com.The lowest price we've seen over the past two years was $7 (it sold out quickly at that price). It can be used in a full or partial circle, has adjustable water flow, and covers 1250sqft of lawn. Order for free pickup or spend $35 for free shipping. Sales tax is charged in most states.