I can't understand the logic behind why the MC want the goods produced inside his world distributed to outside world... Sure monopolizing a certain rare goods is risky, it's quite possible you'll become target of other people or country, but only if they know you have access to this rare thing. Nobody will not trying to take your stuff if they don't know you own stuff. But by distributing the goods from his dimension to adventurer, people will start paying attention to this place, defeating the purpose of hiding from outside world....
