Increasing gold limit?

[Qrom Bellascream]

Is it possible to do this? Or should I just use a scoreboard as a replacement to show the player's gold?

 

[Kaijyuu]

The limit is hard limit, yeah.

A million is quite a lot so you might gain some mileage by simply reducing the cost of everything by a factor of 10 or 100.
Another solution I've seen in some maps with ridiculous exponential scaling is using lumber as additional digits (with every 100000 gold being converted to 1 lumber, and vice versa). This works nicely with bounty, shop prices, etc, since lumber can be used in all of those. Not applicable if you're using lumber for anything else though.

 

[Dr Super Good]

I would advise deflating the value of gold rather than having to use a larger limit.