How to cheat Money

Make sure you have at least one mastered item in heavy,dual,shield and/or the other category further to the right.The trick is simple.make sure you tap the "all" button and select a weapon of the highest price in the light weapon category (I recommend you choose weapon that you haven't buy yet).Then,you go to shield - or further to the right,no problem - and you tap the sell buttom while at the same time,or simultaneously,you drag your inventory to the light weapon category.Once you've done that,tap green button which means you are selling an item.After that,you should be able to see that you're gold has been added with the same amount as the price of the chosen light weapon.I think this trick can only works if you haven't update the game.