Hi,
Based on @MonkeySAN's great work, I made an LUA script to mimic what his video shows.
Once "diamonds" paid chests are unlocked (SHOP and VILLAGE SHOP), you can start the script.
Choose PRICE in Diamonds, MIN CARDS offered and MAX CARDS offered (For example 300, 6 and 14).
Let the script find values, then the script will ask you to return (refresh) to the SHOP and get the new price for the Chest.
Click back the GG icon and enter this value.
The script changes the price to 0 and no ads are required to open this Chest again and again.
This worked for me for BIZ Chests, PREMIUM Chests and Villages Chests.
Not sure if disclaimers are required, but just in case: This script is provided as is, use at your own risks, feel free to edit and improve the script, do not sell it
Enjoy!
NB : I hope one day I will be able to find those address by myself and be as good as @MonkeySAN ! XD
com.lumber.inc.lua