Where Do You Buy/Sell Stuff?

Black Jack

You can buy and sell items at the General Store in all towns except ghost towns.

However, as of now, there is no town that currently has a General Store, so you're stuck with keeping your items in your backpack and relying on luck to find new ones while you're working on jobs.
 

KittySmokingun

Does your backpack ever get full, or does it have an unlimited capacity?
 

Black Jack

Unlimited capacity.

That in my personal opinion, is the best feature in any game ever. :D
 

iKill

There is one General store currently in Calamity creek

however i advise you to hold onto your product items, as they may come in handy for quests later on in the game