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| Level | Warden Office Lv. Required | Cash | Upgrade Time |
|---|
| 1 > 2 | 2 | 66 | 4s |
| 2 > 3 | 3 | 79 | 7s |
| 3 > 4 | 4 | 95 | 12s |
| 4 > 5 | 5 | 427 | 47s |
| 5 > 6 | 6 | 1,067 | 1m 29s |
| 6 > 7 | 7 | 2,134 | 2m 51s |
| 7 > 8 | 8 | 7,041 | 4m 3s |
| 8 > 9 | 9 | 8,449 | 5m 35s |
| 9 > 10 | 10 | 10.1K | 6m 59s |
| 10 > 11 | 11 | 12.1k | 8m 23s |
| 11 > 12 | 12 | 30.4k | 9m 17s |
| 12 > 13 | 13 | 36.5k | 10m 14s |
| 13 > 14 | 14 | 43.8k | 0:12:15 |
| 14 > 15 | 15 | 65.7k | 14m 17s |
| 15 > 16 | 16 | 78.8k | 21m 49s |
| 16 > 17 | 17 | 94.6k | 24m 15s |
| 17 > 18 | 18 | 189.2k | 24m 25s |
| 18 > 19 | 19 | 227k | 31m 29s |
| 19 > 20 | 20 | 272.4K | 34m 6s |
| 20 > 21 | 21 | 899.1K | 39m 11s |
| 21 > 22 | 22 | 1M | 51m 8s |
| 22 > 23 | 23 | 1.2M | 1h 4m 26s |
| 23 > 24 | 24 | | |
| 24 > 25 | 25 | 5.1M | 1h 45m 15s |
| 25 > 26 | 26 | 6.1M | 1h 6m 43s |
| 26 > 27 | 27 | | |
| 27 > 28 | 28 | | |