Just do what everyone else is doing in the uk. Sell your copy of destiny for 10quid then pre order legendary edition for 35quid of the net making taken king 25quid, bargain. That way they only make probably the 20quid they sold it to the distributors rather than the 40quid off the store. They will be able to see who's used codes for less than who's paid full price direct from Sony/xbox store then they might get the message that there taking the p on the dlc direct from the store