I've illustrated how common and acceptable this specific sales tax topic is. Alas, I am sorry, but you do not get to make the decision. If you have a problem with me or any further actions, please go to my previous post you mentioned and clik the report note at the bottom and discuss it with Peter Davis. Taxation whether state or federal is certainly political.
The price of silver coins -- Buffalos -- is definitely less than $21.98 (at least today); I posted above a link for an Apmex special today at just over $18. That knocks almost 23% off the premium paid.