Home Depot offers the Tekton Inch/Metric 26-Piece Hex Key Wrench Set for $14.27. (Amazon offers it for the same price with free shipping for Prime members.) Opt for in-store pickup to avoid the $5.99 shipping charge. That's the lowest price we could find by $3. This set features color-coded housing for each long-arm, ball-end hex key. It includes 13 each of standard and metric sizes.