You need to select the wrench with case version from the pull-down menu ($150 retail) and then press add to cart. When you do that, you will see a place to enter your zip code and discount (coupon) code. Enter the code, and press update cart, and the $99 price will appear. You can then check-out with paypal.

You can also call me at 312-884-7644 during business hours and I can do it over the phone for you.

Thanks.

BLMW