Now included in  LEGO - Loot Economy Gear Overhaul.

Makes the Runewright's setup moneysink costs cheaper by a factor of about 5.4. That specific number was picked as it is the biggest multiplier used by vanilla merchants when bloating prices (and thus similarly the biggest price reduction achieved by my Cheaper Lore Friendlier Prices mod).

Stage 1 5000  -> 900.
Stage 2 10000-> 1800.
Stage 3 15000-> 2700.

Total: 30000-> 5400.

Translated to every language.

Install:
Just extract the contents into your \The Witcher 3 - Wild Hunt\Mods folder (where your other mods are). No script merging needed nor possible for the type of files changed by this mod, but you can choose a load priority if in conflict with another mod (unlikely).

Uninstall:
Delete the extracted folder. 

Changed files :
\dlc\ep1\data\quests\mq6005_enchanter.w2phase
\dlc\ep1\data\gameplay\community\dialogues\shop_enchanter_01_lvl_0.w2scene
\dlc\ep1\data\gameplay\community\dialogues\shop_enchanter_01_lvl_1.w2scene
\dlc\ep1\data\gameplay\community\dialogues\shop_enchanter_01_lvl_2.w2scene
\dlc\EP1\content\ar.w3strings
\dlc\EP1\content\br.w3strings
\dlc\EP1\content\cz.w3strings
\dlc\EP1\content\fr.w3strings
\dlc\EP1\content\de.w3strings
\dlc\EP1\content\en.w3strings
\dlc\EP1\content\es.w3strings
\dlc\EP1\content\esmx.w3strings
\dlc\EP1\content\hu.w3strings
\dlc\EP1\content\it.w3strings
\dlc\EP1\content\jp.w3strings
\dlc\EP1\content\kr.w3strings
\dlc\EP1\content\pl.w3strings
\dlc\EP1\content\ru.w3strings
\dlc\EP1\content\zh.w3strings