Jim Turner wrote:

You are the one being thick here.
Extra ordinarily so, I'd say.

There is more that adds to the cost of parts than sales tax.
snip A really fine effort.

Which doesn't even touch on,
Buying in quantity, rebates, and the "food chain".
(Any one of which makes sales tax pale.)

Or, inter State agreements,
and
Who pays sales taxes whether the seller collect's them, or not.

----- My favorite quote -----
"A pessimist sees the difficulty in every opportunity;
an optimist sees the opportunity in every difficulty."
Sir Winston Churchill (1874-1965)
- One test is worth ten thousand words -