The growth of TXT's album sales is like parabola curve chart, it's began with 180K in debut album then grew more and more.
**Album sales, update : March 2021
Year 1 :
The Dream Chapter: Star = 278,846 [1 version]
The Dream Chapter: Magic = 300,910 [2 versions]
Year 2 :
The Dream Chapter: Eternity = 379,053 [2 versions]
Minisode1: Blue Hour = 508,626 [3 versions]
Year 3 :
The Chaos Chapter: 1 [EP] May
The Chaos Chapter: 2 [EP] Sept.
The Chaos Chapter: 3 [Studio Album] Oct.
Slow but steady for sure 
