I think the 1/5 Gold rate for magic items works well in their default "points of light" setting.
In such a setting, trade is very dangerous because of the constants dangers away from civilization. But that trade is very lucrative, considering I'm basically getting 5 times my investment when I sell a magic item. In a way, it turns traveling merchants into their own kind of adventurers. Instead of killing monsters, they brave the road of commerce.
In fact, I bet that would make an excellent campaign idea
In such a setting, trade is very dangerous because of the constants dangers away from civilization. But that trade is very lucrative, considering I'm basically getting 5 times my investment when I sell a magic item. In a way, it turns traveling merchants into their own kind of adventurers. Instead of killing monsters, they brave the road of commerce.
In fact, I bet that would make an excellent campaign idea