RAINBOW is a girl group formed by DSP Media in 2009 with members Woori, Seungah, Jaekyung, Noeul, Yoonhye, Jisook, and Hyunyoung, the group has sold more than 177K physical copies combined between South Korea and Japan.
Here is a summary of their sales in both countries.
Korean Discography: 62,477 copies sold
Gossip Girl
Format: 1st Mini Album
Release Date: November 17th, 2009
Total Sales in South Korea (Gaon): 5,542 copies sold
4,781 copies sold in 2011
761 copies sold in 2012
So 女
So Nyeo
So Girls
Format: 2nd Mini Album
Release Date: April 7th, 2011
1st Month Sales (Gaon): 13,301 copies sold (#7)
Total Sales in South Korea (Gaon): 25,395 copies sold
21,900 copies sold in 2011
3,182 copies sold in 2012
211 copies sold in 2013
102 copies sold in 2014
Sweet Dream
Format: Repackage Album
Release Date: June 22nd, 2011
1st Month Sales (Gaon): 5,797 copies sold (#12)
Total Sales in South Korea (Gaon): 7,950 copies sold
7,208 copies sold in 2011
742 copies sold in 2012
Rainbow Syndrome
Format: 1st Full Album
Release Date: February 13th, 2013
1st Month Sales (Gaon): 5,960 copies sold (#12)
Total Sales in South Korea (Gaon): 8,436 copies sold
8,303 copies sold in 2013
133 copies sold in 2014
Rainbow Syndrome Part.2
Format: 1st Full Album
Release Date: June 4th, 2013
1st Month Sales (Gaon): 6,017 copies sold (#15)
Total Sales in South Korea (Gaon): 6,605 copies sold
6,605 copies sold in 2013
INNOCENT
Format: 3rd Mini Album
Release Date: February 23rd, 2015
1st Month Sales (Gaon): 3,826 copies sold (#10)
Total Sales in South Korea (Gaon): 4,740 copies sold
4,740 copies sold in 2015
Prism
Format: 4th Mini Album
Release Date: February 15th, 2016
1st Day Sales (Hanteo): 119 copies sold
1st Month Sales (Gaon): 3,130 copies sold (#29)
Total Sales in South Korea (Gaon): 3,809 copies sold
3,809 copies sold in 2016
Japanese Discography: 115,259 copies sold
A (エー)
Format: 1st Single
Release Date: September 14th, 2011
1st Week Sales (Oricon): 24,082 copies sold
Total Sales in Japan (Oricon): 44,858 copies sold
マッハ
Mach
Format: 2nd Single
Release Date: December 7th, 2011
1st Week Sales (Oricon): 15,506 copies sold
Total Sales in Japan (Oricon): 21,984 copies sold
ガナガナGO!
Gonna Gonna GO!
Format: 3rd Single
Release Date: March 14th, 2012
1st Week Sales (Oricon): 13,587 copies sold
Total Sales in Japan (Oricon): 16,858 copies sold
Over The Rainbow
Format: 1st Album
Release Date: March 28th, 2012
1st Week Sales (Oricon): 13,009 copies sold
Total Sales in Japan (Oricon): 31,559 copies sold