1 Rad: 1600 crowns

2 rad: 3100 crowns

3 rad: 4500 crowns

4 rad: 5900 crowns

5 rad: 7300 crowns

6 rad: 8700 crowns

7 rad: 10 200 crowns

8 rad: 11 100 crowns

9 rad: 12 000 crowns

10 rad: 13 000 crowns

reply here if interested. price per rad goes down if you buy more.