One reason why there is so much fire in these discussions is that there is a kind of circular reasoning going on. The pro argument: IF prices don't go up, then workers will need less gross pay and the embedded tax cost will cancel out the added sales tax. OTOH, if workers expect that same gross salary, then prices will go up by roughly the same amount as the sales tax. Which do you think is most likely?You nailed it.
VAT ?
Flat income tax?
Graduated income tax?
Anything but the excises and tariffs designed by our founders, eh?