Thanks-- I belive you inadvertently answered my "question."
BvD (in trial) did not know the ACTUAL cost of the GS cookies they sold.
The orders are taken and written on the girls' order sheet-- which was shown to BvD in trial. Unfortunately, Danielle did not live long enough to distribute her cookie orders, or collect the money and checks-- except for those donations, possibly. In trial, BvD did was not asked if DW wrote a check or paid cash, but she verified that DW ordered a box (for donation.)
Cookie delivery time, a parent pays close attention to the little details of accounting. For the vDs and their neighbors and friends, the old adage,-- "if you have to ask how much-- you can't afford it."