-1 for 10c refund, coca cola refuse to accept the 5 cent per bottle increase, so they are passing the cost onto the traders, who have to charge 5 cents more. Its only 5 cents for us, but for them its 5 cents x however many they sell.
Whenever you gain something (recycling/environment) another factor always goes up (money), its always a scale, and the consumer usually ends up with the bill.