I really don‘t like Buchpreisbindung. It frequently makes books significantly more expensive than their English originals (I‘ve seen prices 10€ higher than the English version). That’s the primary reason why I choose to buy the original English versions instead (Buchpreisbindung does not affect non-German books as long as they are not specifically targeting the German markets like educational materials). A nice side effect is the noticeable improvement tin my comprehension skills for English texts.