Here's a list of the add-ons used on Traffic Secrets (or any of the book offer pages):

ORDER SUMMARY
ADD / REMOVE PRODUCTS
INTERNATIONAL SHIPPING
MULTIPLE POPUPS
CONTENT TOGGLER
TOGGLE ON STEPS
SPLIT FULL NAME
VIMEO UNMUTE UNPAUSE
COUNTRY REPOPULATE (Note:  Only if you plan to sell hard goods on the OTO page)

On the OTO Page (again, only if you are selling hard goods on the OTO)


OTO INTERNATIONAL SHIPPING
OTO ADD PRODUCTS FOR BUMPS AND SHIPPING

ADD / REMOVE PRODUCTS OTO



IMPORTANT NOTE:  A lot of folks try to add PayPal Plus into the above scenario, I recommend staying away from that combination as it will not work with this setup.