To get a lot of money:

1. install the mod;
2. do not include the infinite money item in the mod menu, go through the tutorial until the equipment is enchanted (if using the mod before that, then you will not be able to go further in the game);
3. enchant an item;
4. completely close the game;
5. start the game and immediately include the item with infinite money in the menu mod;
6. complete any battle;
7. completely close the game and restart it;
8. play without using menu mods.

If you do everything right - you will have saved progress, a lot of game currency and prices in the store, as in the original. If you need to get the same amount of money again, then repeat steps 4-8.