I am a father to a preschool age kid and frequently travel on airlines. This kit is meant to all fit in the tin allowing me to put it in my pocket along with some keys and I'm good to go. The bandages and sewing kit are for playground accidents and the shout wipe is for airport food accidents.
You can find it on Amazon sometimes. It's available on and off. I recommend to just keep checking.
Do you get much attention at the airport security with that?
I checked Ebay and the prices are a little intense. :)