Jacks Tool Shed via eBay offers the Stalwart 2-Pocket Heavy Duty Denim Shop Apron, model no. 75-27018, for $8.30 with free shipping That's the lowest total price we could find by $5, outside the mentions below. It measures 25" x 34" and features two 6" pockets.

A close price, Amazon charges $9.03 with free shipping for Prime members; Also, Walmart has it for $9.35 with free in-store pickup.