JakeWilson.com sells shims in half sizes for $1.49 each, I bought 3 each in the half sizes from 2.18 to 2.28 and a couple of extras in the full size in that range. ...
I went to that site, and cannot find the shims you speak of for $1.50 each....
have a link?
with regards to correct shim sizes for the C14 (other bikes may not be as close as these are) the Hot Cams Kits just don't do the job, they are 90% out of the range you will be needing.
Your best bet is to swap shims at a Kaw dealer, or at a Honda dealer. They both have the correct increments to get you right to the edge without waste.
Start off by contacting both Kaw and Honda dealers, and speak directly to the man in charge of service, ask him nicely if they will swap shims with you...it works.
You will need to get in there and measure clearances on all valves, then remove the cams and measure each shim, replacing them in their original positions
don't pull them all out at once, too much chance of horrendous mishaps doing that.
calculate the needed shim differences, and then figure which ones you can re-purpose and swap.
While you have each shim bucket out, also Mic the head thickness of them as they differ also, and swapping a bucket's position in some instances goes a long way to saving a shim....
it seams like it is simpler to buy a kit, but really it's a waste of time and money, as will will ALLWAYS have to get one that doesn't come in the kit.
for reference, here is my first shim map, showing shims and buckets swapped, and what needed to be replaced.
best of luck...