like @dinmamma said, the more money you have the more you can make, in my world a selected few people on a regular basis control the premium scroll trade, they buy out all the scrolls when there are in their cheapest price (around 800k) and since they are the only providers for the scroll they can sell for 1kk or more, making profit in each scroll they sell, the same idea can be applied to other items, green/blue djinn, rashid etc etc , pick a side of the market and focus on that.