Blindfolded

[jolly shuttle]

You only see consumable type until owned (in packs, you see if you can use it or not, so you can kinda tell which one it is)
You only see buster pack size until opened
You only see Joker rarity until owned
You only see Voucher tier until buyed

[fluid crystal]

maybe the voucher could atleast tell you the tier before bought.

good idea though