Making a "sell" only shop. How can this be done?

[MoltresRider]

I have a casino in my main game and I have a couple ATMs in the casino.

At first, their purpose was only for aesthetic and to give the map a more of an actual casino feel, but now I want to do something for those gambling addicts who spend all their money at the casino. I want those ATMs to have a feature where you can sell items for currency.

However, I only see the option for "purchase only" but not for "sell" only.

I was wondering if there is a way to make shop processing "sell only"

 

[TRIDIUM]

Himeworks seems to have a script

 

[Jorel]

I was wondering if there is a way to make shop processing "sell only"

The easy way to accomplish that would be to create a shop without adding any merchandise. Then your only option would be to sell, as you couldn't buy anything.

However, using the plugin mentioned above would be a more graceful solution.