The cost to level up something with linear scaling is the new level in Experience. If you wish to level something up more than one level at a time, you must still pay for the intermediate levels.
| Level | Experience Cost | Total Experience Cost |
|---|---|---|
| 1 | 1 | 1 |
| 2 | 2 | 3 |
| 3 | 3 | 6 |
| 4 | 4 | 10 |
| 5 | 5 | 15 |
| x | x | x(x+1)/2 |