For instance ship wrecks can spawn anywhere around Altis, most of the times far away from the antique dealer, and at witch the speed the boat travels at is really slow, and the capacity of the ship is also very small, so here's the scenario .. you do a ship wreck that took you ages to get to, you fill up your good about 340k (my average) then you go all the way back to kavala to an antique dealer witch is right next to the drug dealer witch the risk is crazy and most likely gonna be robbed . ( also the only place you can sell goods too). Im just saying the money is not worth it for the risk.