Its not about a whole economie system. If you would do this, then you would have to install a propper trade-system, etc., too.
Its about the feeling. Its about, if the world makes sense. And in this case, it doesn´t make sense. I got the feeling, that nobody was sitting there for this 5 minute - topic (or maybe even 1 hour) and was thinking about, if the whole system is balanced. Because it clearly isn´t. I played table-top games for a long time and there you have whole price lists for feeding the backround information. And here in the game this price list topic was taken together without thinking, without sense. For me it destroys the feeling. For me it destroys the game.
I can understand it for low - budget companies, where maybe one guy is doing the whole job, or where you put pupils at the computer. But in case of obsidian, which was founded 2003 and has some people sitting there, which use to pay their bills, their mortgages, their taxes, it is embarrassing. Such people should have some sense for, what prices are reasonable.
And in a world, where the average salery for security staff is 10 copper per day, then it absolutly makes no sense at all, to let the player pay 150 copper for a decent hotel room.
And i don´t think, this "budgeting between making a good story and constructing an economy" must be taken as a choice. A good story includes some reasonable thinking in prices. Otherwise the backround information don´t add up and the stroy is broken. Especially as you don´t have to construct a economy. Just some reasonable prices.
Or does this kind of telling makes sense? "I was hunting down the mighty dragon. I fighted for hours. It was a terrible fight, but at the end i was succesful and was able to pillage his hort. There was a big pile of gold coins. At least two millions rupeen worth. And i was able to pack this whole amount on 10 burros. I traveled to the next village, where i was able to pay the whole rent for one room for one day! I was so lucky!"