Here is how to score BOGO plus additional more than $6 on your order. Here is how this hack will work. YMMV. Expires 12/31
1. After logging in, go to "Special" tab. After going to Specials, look for a promo code box on the top right and enter 2018DEAL and click apply.
2. Since you are on Special tab, see BOGO and click on add and customize.
2b) After selecting the BOGO Offer on the Specials page, choose Create Your Own pizza.
3. Order one pizza and then system will ask you to add/customize another pizza.
4. Once you have ordered both, you can see on the checkout that you getting additional > $5 off using 2018DEAL.
5. I got two pizzas for the price of one and additional $6 off. Tested multiple time and seems to be working.
EDIT: Special note: Make sure that after entering 2018DEAL code, go to Specials tab and choose BOGO (add and customize) option.