I don't know for how long they've been published, but I thought all of you would like to know and were not aware!...

http://www.g-music.com.tw/GMusicBillboard0.aspx
FOR THE WEEK 12/10-16/2010:
~The album debuted @ #6 on the Taiwanese G-Music Weekly COMBO Top 20 chart w/ 1.54% sales! (the highest weekly debut behind MJ's MICHAEL)
~The album debuted @ #1 on the Taiwanese G-Music Weekly J-POP Top 20 chart w/ 13.29% sales (almost more than everything else in the top 5 there combined!)
~The album debuted @ #2 (again behind MJ's MICHAEL but w/ a closer margin) on the Taiwanese G-Music INTERNATIONAL Top 20 chart w/ 5.8% sales!

http://www.gaonchart.co.kr/main/section/album/list.gaon
FOR THE WEEK 12/05-11/2010:
~The album went/debuted all the way @ #1 on what (I presume) is the International Weekly Gaon (Korean) Top 100 Albums Chart, with the rest of her back catalogue flooding in on the same chart in seven simultaneous positions (no English albums unsurprisingly); no doubt due to the U.Stream concert and her hiatus announcement!...
#28 Single Collection Volume 1!
#62 FIRST LOVE!
#67 DEEP RIVER!
#70 DISTANCE!
#90 HEART STATION!
#97 ULTRA BLUE!

And as a special bonus, someone anonymous managed to post and translate professional album reviews onto the UHSCV2 Wikipedia page! If you follow the link of the VIBE source, you can translate/read the ratings they gave all her other albums as well (all were fairly awesome from what I can make out)...
http://en.wikipedia.org/wiki/Utada_Hikaru_Single_Collection_Vol._2#Critical_reception...

If anyone can make or figure out the actual sales figures for the album in Taiwan and South Korea, let us all know here; I'll see if I can e-mail the companies and ask them if they know and can tell the curious public what's up! http://en.wikipedia.org/wiki/Utada_Hikaru_Single_Collection_Vol._2#Chart_reception