Amazon offers Prime members the First Aid Only 299-Piece First Aid Kit, model no. FAO-442, for $11.69 with free shipping. (Non-members can spend $49 or more to qualify for free shipping; otherwise, shipping costs $6.) That's the lowest total price we could find by $11. It measures approximately 9" x 7.5" x 3" and includes medicine, antiseptics, bandages, and injury treatments.