My prices include VAT (which is currently 20% here).
That's something I find difficult to get my head round in the States - here the price stated on the price label tends (not always, but usually) to be the price you pay at the till. If it is an exception (e.g. excluding VAT) then that is usually stated, and quite often the price including VAT is also on the sticker, albeit in much smaller print.
It takes a while for me to get used to remembering that sales tax needs to be added to the sticker price when in the States (and all states seem to have different rates - extra complication!). You must all have seriously impressive maths skills!! Even at my best my mental process is: "So that's $10.50... and a bit..."