Girls' Generation-TTS is a girl group formed by SM Entertainment in 2012 with members Taeyeon, Tiffany, and Seohyun, the group has sold more than 314K physical copies in South Korea.
Here is a summary of their sales in the country.
Korean Discography: 314,323 copies sold
Twinkle
Format: 1st Mini Album
Release Date: April 30th, 2012
1st Week Sales (Hanteo): 41,300 copies sold
1st Month Sales (Gaon): 139,388 copies sold (#1)
Total Sales in South Korea (Gaon): 160,055 copies sold
144,222 copies sold in 2012
9,437 copies sold in 2013
3,880 copies sold in 2014
1,390 copies sold in 2015
1,126 copies sold in 2016
Holler
Format: 2nd Mini Album
Release Date: September 16th, 2014
1st Day Sales (Hanteo): 4,810 copies sold
1st Week Sales (Hanteo): 30,400 copies sold
1st Month Sales (Gaon): 76,520 copies sold (#2)
Total Sales in South Korea (Gaon): 92,301 copies sold
82,904 copies sold in 2014
6,701 copies sold in 2015
2,696 copies sold in 2016
Dear Santa
Format: Special Album
Release Date: December 4th, 2015
1st Week Sales (Hanteo): 23,500 copies sold
1st Month Sales (Gaon): 60,456 copies sold (#4)
Total Sales in South Korea (Gaon): 61,967 copies sold
60,456 copies sold in 2015
1,511 copies sold in 2016