.50 Pick 4 question

[Diver67]

How is the cost of a ticket calculated? For a dollar Pick 4, its easy to simply multiply by the number of selections per race. (Right?) But if your bet is 50 cents, how does it work? If I have 4x4x2, do I multiply (.50x4)(.50x4)(.50x2), which comes out to 2x2x1, or $4. But a $1 ticket would be $32, so this makes no sense. Help!