It's very impressive actually. The amount of sales for those are already close to what it was for her total 2007 sales. Back then she released a brand new album and three singles. Not any re-releases.
"Baby's breath" (album) sold 20,000+ and "Namida ga Tada Koboreru Dake" (single) 7,000+ copies. I don't have any stats for the other two singles though.
There was some promotion going on at the
Omotesandou subway in Tokyo:
Credit: 雨のリゾート
Quite huge wall with Seiko albums there!
