247,047 copies sold
...Woah!
Let's compare some other first day album sales:
SKE48 - Kono Hi no Chime: 51,875
AKB48 - 1930m: 625,401
That's 5x more than SKE48's album! The reason may be that the NMB48 album has better value for money than the SKE48 album. NMB's DVD offers a full concert for 3000 yen, whereas SKE had the 63 PVs for 4800 yen. In addition, SKE's single released on the same day, so I guess the fans were broke. haha