The whole hard to leave Orario probably applies only to adventurers and permanent residents, I doubt they're keeping traders from entering and leaving.
And you're really underestimating the wealth that come out of Orario, Orario is basically the equal of an oil producing nation, in a world where it's the only oil producing nation, 98% or more of all fuel in the world come from Orario, in the rest of the world, the only source that's not buying from Orario, is the sparse and weak monsters still surviving on the surface.
...But why would they import their own gear, when the Dungeon generally produces better materials than most other places? What you responded to was me talking about the sorts of skill sets people would need to either work with various Drop Items, or to make various pieces of equipment we've seen. We've seen things like cut crystals, bows, staves, leather armor, etc. And you can't import tailored clothing. That's not how tailoring works. Also, I forgot glassblowers to make the vials for potions, though those could conceivably be imported. Still, due to breakage concerns, I could also see someone making them locally.
As the thing about leaving Orario, I'd imagine that one could get permits for free travel...but that still costs money and time. Which will drive prices up. Not that they aren't likely inflated out the ass already, specifically
because Orario's so rich and the Gods are infamous spendthrifts.
I would not be surprised if gods do occasionally pay to have a statue shipped in from some remote corner of the world, and may well import much of their clothing from the far reaches. Any moderately wealthy famiia will be absurdly wealthy, and these things are status symbols, being absurdly impractical to purchase is actually a boon, on account of demonstrating that the buyer is capable of doing so, thus elevating their status. It is exactly the same as spending twice as much for half the quality because it is an exclusive brand that will only be worn once.
It's not shipping the statue that's the hard, it's getting it there intact and putting it into place. Clothes, food, jewelry, even furniture and smaller statues, that stuff's usually easy enough, especially if it's not custom ordered, but rather one of many alike pieces. Anything large, such as massive blocks of stone, timber, though? That gets more tricky. Big stuff usually requires a lot of logistics, and money isn't always enough to overcome the issues involved. Especially if boats and horses are your primary means of transport.
Commerce in a mostly medieval world with monsters attacking humanity is going to be chase, time consuming, and
dangerous. Traveling of any sort, be it people or goods, used to be risky and expensive in ways people today have a lot of trouble truly grasping. Shitty roads and bad terrain weren't just an inconvience for horse-drawn modes of transit: in some cases they formed entirely impassable barriers to the transportation of large goods. Larger, more heavily laden carts have fewer viable routes, as they have it much harder on subpar roads. They're hurt even worse by dirt roads turned to mud, ice, and snow drifts, which can render large chunks of the year non-viable for travel, or at least make it a risky proposition. And a wise merchant doesn't gamble thst recklessly with expensive products. If they transporting something fragile, like marble statues, they need it be still more cautious, as jostling, if extreme enough, may damage the good in question.
Even if the terrain and/or weather isn't an issue, horse-drawn modes of transporting goods suck. They generally have no mechanical brakes able to stop them in time to avoid collisions, assuming they have any at all, the "engines" have their own minds and take a lot of food to operate, and the axles and wheels are often very fragile. And that's without considering bandits and monsters. Water travel doesn't share in many of those issues, but it requires a navigable waterway that's wide enough and deep enough to accommodate the object in question, plus the boat. Which is true of land transport, too, only you also have to account for teams of horses, too.
Throw in the fact that a very large statue would have to be the result of a lot of man hours, likely from multiple individuals, possibly weeks or months of work, and you run into another issue: losing it isn't just expensive in terms of money, but
time. If it gets dropped into the ocean or thrown off a cliff, or even majorly damaged, that news has to reach the god who ordered it, who then has to reorder it, wait for that request to reach the manufacturers/artisans...it could become a huge waste of time and resources, though that obviously depends on the exact level of impracticality.
Trying to import things that
really aren't suited for it might, on some level, be an impressive display...but it likely also means you flushed money away on a product that simply wasn't worth however much you spent, and that you waited a long time for it reach you successfully, when you could have gotten something as good, or probably better, from the sculpting (or maybe general stoneworking) Familia that probably exists somewhere in Orario. Given why they came down from Heaven was basically to have a vacation, most Gods would likely quickly get irritated enough by shitty logistics chains to just go with the locals. Unless they have extreme monomania for the object in question, of course.
It's the gods' Hotel California?
Glad to see I'm not alone in making that association. I was sorely tempted to make that joke.