A master has two colour machines with a minimum volume for both black and colour. All unders are clawed back at the historical rate (AUH). There is a minimum of 10,000 pages for black and 2,000 pages for colour. After the first month there is a price increase.
The setup is exactly the same as the previous example, with the exception of the Clawbk Unders field, which is now AUH.
The first month reads and jobs created are exactly as the previous example. Before the second month is billed, there is a rate increase to 0.015 per black page, and 0.12 per colour page.
If, the following month, the first machine receives reads of 36,000 (7,000 pages) and 12,300 (800 pages), and the second machine receives of 58,000 (5,000 pages) and 9,400 (400 pages), once jobs have been created for the two children and the master, they will appear as follows:
We can see on the child jobs that, because the black overs were charged in the second month, they are also clawed back at the second month's rate. With the colour meter, the overs were charged in the first month at the lower rate, so they are clawed back at 0.10 per page. The increase in standard pages occurred in the second month, so they are charged at the new rate.
With the master job, the opposite is the case. The unders were charged in month 1 for black, so they are clawed back at the month 1 rate. For colour, the unders were charged in the second month, so the amount clawed back is at the new rate.
The total for the master as a whole is 12,000 X 0.015 + 2,000 X 0.12 = 420.00 less the 2,000 black overs and 500 colour overs.
When reducing overs we:
▪Reduce unders (If it’s a master),
▪Increase standard billing.
For black we add (-2,000 X 0.015 – 2,000 X 0.01 + 2,000 X 0.015) = -20.00.
For colour we add (-500 X 0.01 – 500 X 0.012 + 500 X 0.012) = -50.00.
Overall we bill 420.00 – 20.00 – 50.00 = 350.00 ex tax.