A pity that a player needs to spend nearly 750 USD to show the player base how this sale event is nothing but a scam, with this sample we can conclude 1% for sayha blessing, 4% for sayha talisman 0.2% for a crystal level 11, 0.9% for a black ticket, 1.3% for a artifact box, 4% selenite, 1.7% Elcyum, 0.2% for a legendary dye, etc...
so yeah, with those rates I can understand why they crippled the drop rate from regular means in game.
This is why we need a public rate table for every item these gambling boxes, Nexon maplestory and mihoyo genshin impact were forced by law to this, i wonder what makes NCSOFT different.