I don't like its advertisement either. Nevertheless, I have tested many off-the-shelf first aid kits made by a variety of companies. I feel confident in saying that this FAK offers the best bang for the buck.

I don't think it is possible for an individual to build a comparably equipped FAK for less than $25 unless said individual already has some of the components or can get them at a discounted price.

Jeanette Isabelle
“Birds of a feather sure know how to clip each other’s wings, huh?” Lutz, Ascendance of a Bookworm: Part 2 Volume 4