Within the post-apocalyptic, zombie-infested universe of 7 Days to Die, there's a smattering of "Traders" where players can buy and sell items for Duke's Casino Tokens - which are considered of high value. This is the system that allows players to negotiate, to barter, for their daily survival requirements. There are, however, certain limits that exist within this arrangement  - for example, items are restocked after established intervals, and the structure and its surrounding field are indestructible so that neither player nor zombie can break in after a particular range of time.

This is where this mod comes in to help -

This A20 Trader mod keeps your Traders open - all the time. Simultaneously, it removes their invulnerability so that you can break in any time.