Sears offers the Melnor Hideaway Sprinkler, model no. 9650, for $7.47. Opt for in-store pickup to dodge the $6.99 shipping fee. That's tied with last week's mention as the lowest price we've seen. (It's a current low by $21.) It features a telescopic pole that extends from 25" to 50".
Of note, Shop Your Way Rewards members will earn a Sears credit with this purchase and may be eligible for additional credits and discounts.