Some time back, I purchased a concealed Kevlar ballistic vest, one that's designed to stop both gunshots and knife attacks (most vests will protect from one or the other, but not both).
Unfortunately, I don't remember if I purchased it via AMAZON, or E-BAY, or merely googled it.
I do remember that from the time I made the purchase to the date I actually received it was a period of several weeks, because apparently, it was custom manufactured in England.
In addition to the concealed Kevlar ballistic vest, I also have a surplus United States Army flak vest from the Viet Nam War, plus a surplus United States Army steel helmet with camouflage cover.
I also own a surplus German/Israeli gas mask, with a canvas gas mask carrier.
When I googled, "MACE", I was able to purchase a spray can of Mace in gel form, and a stun gun.
These are items you might consider investing in, and/or adding to your advertised survival products.