Help needed buying Potassium Iodide (anti-radiation medicine)

So I need to buy some Potassium Iodide for about 15 people and the regular pills are just too expensive in my country.

For those that don't know what Potassium Iodide is used for - it is used in the instance where exposure to radiation is going to occur, ie. nuclear explosion, nuclear plant accident, etc.
Instead of your thyroid absorbing radioactive iodine, you take 130mg of safe Potassium Iodide every 24 hours which means the thyroid cannot absorb any radioactive iodine.

I came across this product on Ebay (he mainly sells chlorine dioxide products) which got me thinking that I could just buy Potassium Iodide from a chemical manufacturer instead of buying the pills. I might have bought the product below but I still have to pay for shipping, taxes and our postal system is a mess.
100 Grams Potassium Iodide Crystal Powder USP Grade High Purity

These pills are what one usually buys but they are quite expensive and to buy for 15 people would break the bank in my country.
Iosat Potassium Iodide Tablets, 130mg

So my question is can I buy something like this:
Potassium Iodide AR-500g
or this  Potassium lodide 250g AR

and just measure out the recommended 130mg and use that instead of buying an actual product from a company?

Good idea thinking ahead.

 I just checked online and prices for iodine beads used in production have skyrocketed.

I’m guessing Damascus will be the first city to be leveled. Hope you are not near there.

The theory is that Saddam Hussein, tyrant of Baghdad Iraq, did in fact have huge stockpiles of chemical weapons all along, but they were never found because he secretly smuggled them into Syria days before the 2003 invasion of Iraq. If Syria were to use weapons of mass destruction, such as chemical weapons, against the Jewish people, Israel would respond with their own W.O.M.D such as a tactical or neutron bomb. A weapon of this magnitude could certainly cause Damascus to cease being a city, thus fulfilling Isaiah 17:1.

Cheers.

I guess my question is can I buy Analytical Reagent (AR) grade Potassium Iodide?
It is of very high purity, from 99.8% - 99.9%, it is the second highest purity.

Here is an explanation of the various grades of chemicals -  A Guide to Chemicals and Chemical Grades

Not sure if this is exactly what you're looking for but 'Dr Clark Store' (Dr Hulda Clark's original formulas) are sold here...scroll the page...I take the 'Stomach Saver':
drclarkstore.com/search?type=product%2Carticle%2Cpage%2Ccollection&sort_by=price-ascending&q=iodine*