Sears offers the Craftsman 4-Piece Ductile Iron C-Clamp Set, model no. 66634, for $9.96. Opt for in-store pickup to avoid the $6.99 shipping charge. That's $10 under the lowest total price we could find for a similar set. It includes four c-clamps.
Of note, Shop Your Way Rewards members will earn a Sears credit with this purchase and may be eligible for additional credits and discounts.