Max Level : 1000

Start Cost
2 Gold Bars
500 Gold Coins

Upgrade Cost
Each level increases Gold Bar cost by 2 from the last.
Each level increases Gold Coin cost by 10% from the last.

Upgrade Time
First level (10 Minutes)
Each level increases Upgrade Time by 1 Minutes from the last.

Each level gives you 5000 Gc per Day.
Deactivates if player is inactive for more then 30 Days

Maybe the balance is a little off.

huge -1 from me. this is quit honestly overpowered if maxed. at max level this gives a player 5M gold a day. and total cost to get there is crazy. just 2002 gold bars, but gold coins with the 10% increase each up to 1000, would probably be in the billions, so that's a really strange cost ratio between bars and coin. upgrade time would take about 17 hours if you upgrade immediately between each one. so if a player with the funds wanted to they could get this maxed out in a day, and be raking in 5M gold daily for the rest of their days in this game.