That's not their total sales since their debut, but only their albums sales for 2016
They didn't only sell 2.13 copies in 2016, but they only started selling them in June, when they released EX'ACT
And this also include their Christmas album "For life" which has been selling for only 10 days and already reached 425K copies sold
They haven't even promoted yet but I wanna see this live..
original post: here