I'm sure this will be her lowest selling album in Japan. Since CD sales are lower than before and avex didn't promote BoA properly and Considering MASAYUME CHASING sold 6k only. FAIRY TAIL didn't help at almost anything.
Also, this is only a single compilation 2010-2014.
How many times she will got a comeback in Japan. Only One (JP ver.) was that japanese comeback and sold kinda decent only because it received a massive promotion (but her other recent singles didn't).
WHO'S BACK will got only a brand new song a that's dissapointing. Almost no new material.
She will perform live perfomances (concert) at 2014.9.6. That would increase sales.
I'm not sure If she doesn't care about sales or recent music trends on Japan anymore and she does everything for only passion, love, art.
I love BoA's music. It's kinda underrated nowadays. I consider her as the KPop Queen.
I'm pretty sure she will make a big Korean comeback after WHO'S BACK period ends.
off: BoA interview
https://soundcloud.com/onnida-jini/1...-beer-otoajito