Can they only go up to like 90 super rare? or is it lower like 65, 70 super rare. Does it depend on the shop?

Super Rare is 86-99 according to Subeta Lodge, so 99 would be the max rarity. There is an achievement for restocking items with a rarity of 99, I believe.

Thanks! Do you know if there is a specific rate items like that may drop?

Unfortunately, I have no clue. The higher the rarity, I believe the less chance it has of dropping. However, I'm not very knowledgable about this topic so you might have to ask someone else :)

I see, thank you for your help! :)

They've recently made a lot of changes to shop restocking. I used to snag super rares (90-99)about once a month, and I'm not a dedicated restocker. Since the changes though, I haven't seen a super rare at all. Doesn't mean they aren't there, just that they happen a lot less often.

I can't give you a concrete answer about how often they show up because I can't make an evaluation with no data.

I see, thanks for the info:)