Store Minimum Changes

Hi, I have all of my different greeting cards in the store.

I need to:
1. Set a minimum amount for all
2. Raise the prices on the bottom quantity tiers
3. Raise the minimum number on the first quantity tier 

There are a lot of different cards. Is there a way to change all at once, or do I need to do one by one?

Thanks!

Sorry, there is no batch edit option for the store items. They would have to be edited individually.