It appears that the $1000 cost of the chips is taken out first, before the balance goes to the charities.

From Terry's webpage about these chips:

"...The total production and distribution cost of these unique chips is less than $1000. If you would like to add a set to your collection, we are asking you to contribute a minimum of $100. Higher donations will be very much appreciated. If you do the math, you'll see that this project will generate over $14,000 in profits when all sets are sold!! No one involved in this project will profit financially. All proceeds above direct costs will go to the relief organizations..."