A particular value must be chosen for V in the design of the formula to promote abundance for everyone such that it is not too high as to make the incentive to actually.work too low (as a worker needs to choose to either work, or exchange his time with someone), and not too low as to not provide for abundance (and be like the existing monetary system, which has V=0). 

Consider the following formula:

Cost to consumer = G - G*L + G*L/S

Where G is the amount of current the seller would like to Gain
L is a factor to reduce the cost to the consumer in the range of 0 < L < 1, where 0 is like the current fiat system.
S is the supply of the utility being sold

We need to choose some value L that satisfies the requirement above.

As an example, before empherical data presents otherwise, a value was chosen arbitrarily slightly less than 50%.  As per the histerical reference to the book The Hitchhikers Guide to the Galaxy, 42 seemed like a good number, in this case 42%, or 0.42.  

Cost to Consumer  ,

Supply

While this particular magic number is funny, adding a specific factor adds what is hypothesized to be needless complexity.  With the design of Charge, L is essentially 1.  So:

Cost to consumer = G/S