Currently AR26. Bought the 30 days primogem blessing and the RM400 gem pack (which has a one-off double gem promotion) just to support the developer. So far have one 5*, Keqing. Other 4* I have are Fischl, Bennet, Noelle, Barbara, Xiangling and Chongyun. Not going to buy anymore gem packs unless got a really nice promotion going.

Enjoying the game as of now with Xiangling+Fischl+MC anemo elemental combo

I double checked my shop and apparently you are right. it's per package. This is how my shop looks like now. The 399.90 package still has a bonus but much lesser.

>Farm enough primos for another 10 roll
>Check roll history on Venti banner
>70 rolls so far
>HERE GOES NOTHING
>Gets DILUC gachigasm