Well, if you're rolling for one specific item (1%), 88 rolls is a 59% chance to get it.
Nowhere near astronomical.
good luck
I know, also know there will be a certain item that I will get more than 5 times.
Also SG chance is more than 1% (Reddit says is 1.43% so it increases a little).
But Im ready to fail at it, I will be happy with other items on the banner.