TBH, an entire business could be made sourcing and packing custom bags, but allowing for individual items. Call it the dim sum method. $25/50/100 for a bag and add it all individually.
Looking at the bleeding kit thats almost $200, I am surprised that it doesn't have hemostats, sutures, skin closures, or even a big roll of gauze. A lot of that $200 is blown on just a few items: the tactical tourniquet, a brand name quik clot dressing, a brand name chest seal. Also, we get a high speed low drag patch.
Replace the $40 hi-fin vent with three $14 GI vents, and I can potentially deal with multiple chest wounds.
It also has a single pair of gloves. If I am dealing with injuries, I might need someone's help...or I might contaminate my gloves accidentally and need to change them. A single pair of gloves is pennypinching gone stupid.