Well NF2 is made by Nexon, not SDE.. as far as I know at least lol. Haven't followed the new game, nor do I plan to try it.
I do agree that they should've mentioned that they should've mentioned that you could get duplicate pieces, but eh I was just going to buy the stuff I was going to buy with those olives in the first place, so this free EBB is just the icing on the cake. :)