Sears offers the Classic Accessories Villa Small Window Air Conditioner Cover, model no. 55-105-023901-EC, for $5.10. Choose in-store pickup to dodge the $6.50 shipping fee. That's the lowest price we could find by $14. It features adjustable bottom straps with click-close buckles.
Of note, Shop Your Way Rewards members will earn a Sears credit with this purchase and may be eligible for additional credits and discounts.