Always make an offer for cash if you have it to avoid the tax. Round the number down too! If he creates a receipt he probably has to charge tax.
I am conflicted about this. If I get a receipt then I have to pay tax, but then I get brownie points on my account showing that I at least bought SOMETHING. So when they look up my account when I send in something totally unrelated for warranty, Snap-On doesn't curse "Another tool catfish!".
