Current sales of best selling debut albums (first physical release by a group)
- Wanna One - 1x1 = 1 (To be One) – 805,290 (Debut Year Sales: 741,546)
- X1 – Quantum Leap – 657,888 (Debut Year Sales: 642,583)
- NCT – NCT 2018 Empathy – 581,844 (Debut Year Sales: 330,335)
- EXO – MAMA – 542,723 (Debut Year Sales: 145,925)
- Enhypen – BORDER: DAY ONE – 508,939 (Debut Year Sales: 379,992)
- EXO-SC – What a Life – 419,870 (Debut Year Sales: 391,121)
- BP – Square Up – 403,626 (Debut Year Sales: 230,656)
- BTS – 2 Cool 4 SKOOL – 380,768 (Debut Year Sales: 24,441)
- TXT – The Dream Chapter: Star – 310,504 (Debut Year Sales: 203,795)
- EXO-CBX – Hey Mama! – 308,226 (Debut Year Sales: 275,191)
- NU’EST W – W, HERE – 308,108 (Debut Year Sales: 308,108)
- JYJ – The Beginning – 293,664 (Debut Year Sales: 290,863)
- IZ*ONE – COLOR*IZ – 282,816 (Debut Year Sales: 192,738)
- Treasure – THE FIRST STEP: CHAPTER ONE – 255,074 (Debut Year Sales: 247,983)
- RED VELVET IRENE & SEULGI – Monster – 233,162 (Debut Year Sales: 232,498)
- NCT Dream – The First – 222,073 (Debut Year Sales: 82,654)
- TWICE – THE STORY BEGINS – 214,375 (Debut Year Sales: 49,904)
- GD&TOP – GD&TOP Vol. 1 – 202,866 (Debut Year Sales: 130,000)
- Stray Kids – I am NOT – 186,744 (Debut Year Sales: 60,769)
- Busker Busker – Busker Busker 1st Album – 181,920 (Debut Year Sales: 136,234)
- ITZY – IT’z ICY – 176,872 (Debut Year Sales: 123,777)
- SuperM – SuperM – 175,573 (Debut Year Sales: 167,640)
- AB6IX – B:COMPLETE – 171,578 (Debut Year Sales: 168,075)
- Girls Generation TTS – Twinkle – 160,055 (Debut Year Sales: 144,222)
- Cravity – SEASON 1 [HIDEOUT: REMEMBER WHO WE ARE] – 154,360 (Debut Year Sales: 154,360)
- NCT127 – NCT #127 – 144,625 (Debut Year Sales: 83,272)
- JBJ – FANTASY – 137,859 (Debut Year Sales: 134,900)
- Highlight – CAN YOU FEEL IT? – 114,303 (Debut Year Sales: 114,303)
- ATEEZ – Treasure Ep 1: All To Zero – 108,115 (Debut Year Sales: 23,644)
- WayV – Take Over the Moon – 103,406 (Debut Year Sales: 49,227)
Source of sales: K-Pop Artist Sales @koreansales_twt - Google Sheets
they compile it straight from gaon