The combinations (9):

09 10 19 21 35 36 37
12 18 28 34 40 41 45
11 17 20 22 24 25 29
01 05 23 31 33 42 44
02 06 07 14 16 39 46
04 08 13 15 26 43 47
03 27 30 32 38 40 44
08 10 19 22 35 46 47
02 04 07 20 27 35 42

The final total cost is $12 (played before) + $6 = $18. Babar