| 0.01 PROM cost | 0.492887 LKK |
| 0.1 PROM cost | 4.928867 LKK |
| 0.2 PROM cost | 9.857734 LKK |
| 1 PROM cost | 49.288669 LKK |
| 5 PROM cost | 246.443344 LKK |
| 10 PROM cost | 492.886688 LKK |
| 50 PROM cost | 2,464.433438 LKK |
| 100 PROM cost | 4,928.866876 LKK |
| 1000 PROM cost | 49,288.668756 LKK |
| 10000 PROM cost | 492,886.687560 LKK |
| 100000 PROM cost | 4,928,866.875604 LKK |