Gold Refinery
| Upgrade costs L0 -> L1 | |||
|---|---|---|---|
| Product | Quantity | Market price | Total costs |
 Credits |
1 000 000 000 | 1 | 1G |
 Concrete |
20 000 | 4 802 | 110.4M |
 Steel |
20 000 | 48 736 | 1.1G |
 Glass |
20 000 | 47 462 | 1.1G |
| 3.3G ROI: 12d |
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