Sears offers the Craftsman Professional 4-Ton Jack Stand 2-Pack, model no. 50163, for $29.99. Plus, Shop Your Way Rewards members earn around $5 in SYWR Points. (Not a SYWR member? It's free to join.) Opt for in-store pickup to dodge the $9.25 shipping charge. assuming you'll use the credit, that's the lowest price we could find by $18, although we saw it for $2 less last November. They feature a support range of 12" to 17-5/16" and can heft up to 8,000 lbs. per pair.
Of note, Shop Your Way Rewards members will earn a Sears credit with this purchase and may be eligible for additional credits and discounts.