Where to buy Spell Scrolls? Scroll Merchants locations - Baldur's Gate 3 (BG3)

I would like to list all the scroll merchants in this game as they can be handy for spending some accumulated gold. They are also needed for Wizard Builds, which can scribe these spells and add them to the spellbook.

Act 1

Druid's Grove

Arron

Volo

First encountered in the Druid's Grove. Later can be saved from Goblin Camp, after which he joins your Camp. He will stay there temporarily until "the eye operation".

Goblin Camp

Roah Moonglow

Risen Road

Cyrel

Minor inventory with only a few scrolls

Underdark

Blurg

Rosymon Monastery Trial

Lady Esther

Sells a few scrolls

Act 2

Last Light Inn

Quartermaster Talli

Moonrise Towers

Roah Moonglow

Araj Oblodra

Act 3

Rivington

Boney

This is a mud mephit.

Ferg Drogher

Lower City - Sorcerous Sundries

Lorroakan's Projection/Rolan/Rolan's Projection

Tolna Tome-Monger

She is found deeper into the shop behind a counter: