SALES [Gaon] Top 5 Best selling Rookie Girl Groups (debuted in 2018-2019) as of July 2019:

[perspherspley]

1. IZ*ONE: 517,599 (2 albums)
2. Fromis_9: 139,899 (4 albums)
3. Loona: 100,554 (2 albums)
4. Itzy: 77,109 (1 album)
5. (G)i-dle: 68,654 (2 albums)
Source: @ggalbumsales


You can check the Sales for the individual Album here.
[Gaon] Rookie Girl Groups (debut in 2018/2019) Albums Sales as of July 2019​

 

[Yeddong]

fromis_9 did that from a flop survival show.

 

[WonderfulOnce]

Congratulations to all the groups!

 

[Aquamaraqua]

IDLE! NonB3 girl group, with 2 albums and no predebut hype. Get it girls! You're only going to shine higher and higher if the music keeps on being good.

 

[sexy cutie]

Rookies are doing great

 

[fullofjoy]

Congrats

 

[Lilac]

Congrats to the rookie GGs!

 

[munyuna]

physical monsters LOONA