Kilgore has said the Hub will become a safe town.
It's not already? I never had a problem there... weird.
The reason there is no market is because towns aren't safe. I don't even bother trading n. of NCR anymore. 2,000+/- gecko pelts just wasting away in a crate, because there's nowhere to sell them. Why? Because if you enter those towns, "bang" some numb with a burst gun and no fucking brains shoots you. Forget about armor. I've even tried combat armor mkii. Goes right through it.