At the beginning of the game, instead of taking the commission letter to the armory or weaponry to get the weapon, sell it. You will get a lot of crowns for it.

Use a text editor such as notepad to edit the "merchant.pox " files in the game folder. There are six of them, plus the ones with the merchant's names. Set the "buydiscount" amount to about "2000.00" and set the "sellmarkup" amount to "0.00".