Are you meaning to say:
Cards
1-3 1.22, 4-9 adds .17, 10-14 adds .17, 15-19 adds .17, etc.
Or are you meaning to say:
Cards
1-3 1.22, 4-9 adds 1.22 + .17, 10-14 adds 1.22 + .34, 15-19 adds 1.22 + .51, etc.

where each price break of 5 more cards adds another .17 per 5 more cards? so 3 sets of 5 is 3 x .17 ...