
Cost of the 1st level:
CRP 1.5 It is the main supplier of raw materials for the construction of bearing structures for buildings and ships. Metal is the cheapest raw material. But it requires a lot. Large deep mines require a lot of energy.
Comparison by level
| Lvl | Production of metal | Energy |
| 1 | 15 | -11 |
| 2 | 33 | -25 |
| 3 | 54 | -40 |
| 4 | 80 | -59 |
| 5 | 108 | -81 |
| 6 | 143 | -107 |
| 7 | 181 | -137 |
| 8 | 225 | -172 |
| 9 | 276 | -213 |
| 10 | 333 | -260 |