In the following picture, you can see:
TotalValue / Total-number-of-units = cost per unit
(4213.972039624941) / (3736) = 1.12793684143469
Note: The TotalValue is from the behavior table.
(Cost per unit) x (Number of units for that transaction).
The number of units is the driver quantity.
So, the calculated values for the transactions picked out by the selection criteria are as follow:
1.12793684143469 x 135 = 152.27147359 1.12793684143469 x 1260 = 1421.2004202 1.12793684143469 x 263 = 296.6473893 1.12793684143469 x 1188 = 1339.9889676