I'm in Ireland, I'd say a good third of printed on labels are not even in the right currency, as companies have a single UK and Ireland SKU. It's also understood that generally it's the retailer that sets pricing, not the manfucturer, so when a book has $9.99/£8.99 printed on it and a store sticker with €12.99, nobody is confused that that's not the exchange rates, or about which price they'll pay.
I'm in Ireland, I'd say a good third of printed on labels are not even in the right currency, as companies have a single UK and Ireland SKU. It's also understood that generally it's the retailer that sets pricing, not the manfucturer, so when a book has $9.99/£8.99 printed on it and a store sticker with €12.99, nobody is confused that that's not the exchange rates, or about which price they'll pay.