Sales tax is bad because it is not on the sticker. Guess my and every europeans surprise when we realize that what we have to pay not the sum of the prices on the goods we buy, but that sum plus some more.
VAT is a whole lot more reasonable as the price on the sticker is the price you pay is the sum of the prices on the stickers ;-)
That said:
VAT seems kind of reasonable to me but I will be happy to hear why ut isn't.