Thankfully I do not have experience with the contents of this kit and my personal qualifications to assess it are rather limited. The one key for me in buying a couple wa that one fits just right inside the interior vest pocket of my CCW cover vest. I hope I never need it, but it is thin and light so it stays right there and doesn't share space with anything else. Could I get similar equipment for less price? Probably. Can I pack it down that small myself? Probably not.
Admittedly it is, from my point-of-view, a liability mitigator and/or a possible counter-argument to a potentially over-zealous prosecutor someday if I have cause to need it.
Addressing a point someone else raised about vacuum packing and pinholes punctures to the packaging. I placed the entire packet inside a zip-lock freezer bag for that very reason. Still slim and has a slightly thicker shell to handle abrasions, etc.
Just my two cents...
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The fox knows many tricks; the hedgehog, one good one. - Aesop