RACE 8

7 ALPE D'HUEZ $1.9
1 SHIRAZ'S LUCK $3.5
6 LOOSE BOLTS $10
4 VAPOUR SHAKER $25
9 GOLD AFFAIR TWO $40
3 MATLOCK $50
8 AUSSIE NIKITA $300
10 HONEST ROZZIE $500

This First 4 looks so obvious here.
7,1 - 7,1,6 - 7,1,6,4,9,3 - 7,1,6,4,9,3 for $4 worth

Edit : Late Scratching means just leave the #3 out.