If you don't want to make your own KI solution, you can buy some here (very pricey for its production cost...):
Art Pharma® KI SOLUTION® Potassium Iodide Solutions - ArtPharma.com
I have one and the dropper is still in a good state (not like the one provided with standard lugol's solution which cracked) at least one year and half after I bought it.
But maybe not the right time to buy supplements at this price if you don't know if you'll receive it...
That would do in a pinch, but it is far cheaper to buy KI crystals and distilled water and make SSKI at home.