Sears offers the Irwin 6" V-Jaw Vise-Grip GrooveLock Pliers, model no. 4935351, for $6.72. Choose in-store pickup to dodge the $5.99 shipping fee. That's the lowest total price we could find a buck. They purport to change twice as fast and have twice as many adjustment positions as traditional pliers.
Of note, Shop Your Way Rewards members will earn a Sears credit with this purchase and may be eligible for additional credits and discounts.