[Heliopios]

Make it so that you need to find the way to make the item using some kind of lore skill, and after studying (having) the item for a month or so, you get a message "You believe you know the inner workings and mechanics of Gruglin's Sphere"


After that, you go to a local xsmith in order to try and replicate it. You replicate it successfully, but this time Gruglin's Sphere is only 90% as effective as the original, and now when you sell Gruglin's Sphere (90%) on the market, Joe-Schmo learns how to make it and he makes a copy of that, Copy of Gruglin's Sphere (90%) is rated at 70% effectiveness, or 80 if they are a master craftsman/lorekeeper. Keep this up and every next replicant has the quality reduced by Last quality-(10*times remade)


Skip three months into the future, original Gruglin's Sphere finder is now a millionaire, and still making money because everyone is trying to get that Oh-So coveted 90% replica of Gruglin's Sphere, while the market is flooded with the 10% ones. Market interest wanes after a while, and everything goes back to normal.


Note: I just made Gruglin's Sphere up on the spot.