Future's Market- Guess what we're in Debt!

At the glorious time frame you have a debt limit of 350 gold, just how much have you actually lost?

I came across a little part to futures market I need explained. You see, you lose 50 gold as a lending fee; by which you lose every time you buy something from shop leave then come back. This means you only have 7 purchases until you'll reach 350 gold worth of fees and then you gotta think about just how long that game has to be to reach 350 gold.

So whats up with making it for early rush? Its the future I'm curious about not helping the present. ;3