Gold Refinery
| Upgrade costs L0 -> L1 | |||
|---|---|---|---|
| Product | Quantity | Market price | Total costs |
 Credits |
1 000 000 000 | 1 | 1.00G |
 Concrete |
20 000 | 5 119 | 118M |
 Steel |
20 000 | 49 312 | 1.13G |
 Glass |
20 000 | 48 257 | 1.11G |
| 3.36G ROI: 12.1d |
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