Seismology centre
| Upgrade costs L0 -> L1 | |||
|---|---|---|---|
| Product | Quantity | Market price | Total costs |
 Coins | 10 000 000 000 | 1 | 10 000 000 000 |
 Electronics | 100 000 | 69 665 | 6 966 540 000 |
 Gold | 50 000 | 61 345 | 3 067 250 000 |
 Batteries | 80 000 | 205 193 | 16 415 440 000 |
| 36 449 230 000 | |||