I played the Demo and I am in the mission “Greenwod Run” and freed the blacksmith.
Back in Grackle I talked to the blacksmith’s wife.
I have the problem, that my inventory is totally full and I also disassembled many weapons.
Now I want to search for a merchant, where I can sell all my trash and some items, but in the whole town there is no merchant.
Where do I find a merchant where I can sell my weapons?

that initial town will recover once that greenwood quest is finished.
free the people in the absement too not just the blacksmith.
than the town will have a tailor n general store.
also talk to your team mates, buy a horse and a bankaccount they all can carry stuff for you

general store (cash register icon) buys all the junk
tailor n gunner buy weapons n armor.
metal ingots can be sold at the bank.