Arelith

Being able to store and quickly sell scrolls is incredibly useful, but given the lack of general storage, and the number of scrolls my character almost always carries around, I end up storing all my scrolls in the case, then removing the ones I want to keep before selling the contents. Or rather, I did remove the ones I wanted to keep, until I accidentally clicked "Can you buy the contents of my scroll case?" instead of accessing Westin's store, and just like that, nearly all the scrolls I'd so carefully saved for so long were gone forever. Back to square one.

Unless there's some way of storing scrolls I want to keep separately, or marking them to not be sold, it would be awesome to have a confirm dialog, to prevent accidentally selling scrolls we want to keep.

It's not a fix, but I find it helps to keep scrolls I want to retain outside of the scroll case and just use it for looted items. Most of the time the inventory space is a non-issue.

I did the same thing, for a while, but the inventory space started to become a consistent issue for me. Between potions, wands, scrolls, and all the other stuff my character's carrying around, I kept running out of room when looting, so into the case they went.

A confirm dialogue would be nice, that and remove some of the important scrolls from being auto-sold: (if it's not a feature already)
PvP Oriented Ones:
Word of Faith
Mordenkainen's Disjunction
Banishment
Time Stop
Greater Restoration
Mass Heal
Mass Haste
Restoration
Remove Paralysis

Crafting Oriented Ones:
Cone of Cold
Remove Fear

Scrolls that can't be Scribed but found in loot or drop:
Undeath to Death
Greater Sanctuary (?)

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As for comments regarding inventory space, I've found melee and mundane class that are Str builds often have inventory space issues, whereas low str class often have weight issues.

The Str melee builds would require more wands and scrolls than usual. Dex builds are right in the worst of both worlds.

Agreed, although the best of the ideas would be a dialog box to choose the scrolls that you want to sell while selling your scrollcase.