This problem of different prices in different countries doesn't just apply to Playmobil and Lego.
In the UK at one time (and I think things have changed now), it was cheaper to buy a car in Europe, collect it at the factory and drive it to the UK and pay the duties here, than buy it from a dealer, even after making allowances for currency effects and the dealer's profit on the UK price in the showroom. (And you often got a higher spec car into the bargain.)
One reason given by the SMMT (Society of Motor Manufacturers and Traders) for the higher UK price was the cost of altering cars to right hand drive for the UK. Unfortunately, in their example they cited Japanese cars and in Japan, they drive on the left as we do in the UK and so Japanese cars are built as standard with right hand drive!