Hi Stewart,  It is a calculated daily value. There are out of the box figures already in there.However, you can calculate your own daily value of what you paid for hardware. 
In vOPS 6.5 Standard, under Configuration General -> Prices tab what unit of time is used for pricing?  I can't find in the documentation where it states what unit of time is used for the calculations for chargeback.  Do I put in how much I want to charge per hour, day, month, year?  Thanks.
Chargeback time units for vOPS 6.5 Standard