I'm not sure where you got that number from...
To change the pricing on most electronic coin mechs (early versions), remove the slug rejector and locate 4 little dip switches.
If my memory serves me, they are priced accordingly:
1. .05
2. .10
3. .20
4. .40
1. being the first switch on the left. There are couple versions of these switches so I'm not sure which you have but up is on.
Ex. Putting up SW 1. and down with 2., 3., 4. would be 5 cent vending
Ex. Putting up SW 1. & 3. and down with 2. & 4. would be 25 cent vending
Hope this helps...
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