Choose A Coupon:
The first step is to choose which coupon you want to use. Go through the list and choose the coupon that you like from GfK.
Click The Reveal Code Or Go To Deal Button:
Reveal Code means this is a Promotional Codes. If so, click on the reveal code button and a popup will open. Copy the GfK Promotional Codes and in the next tab the store page will open.
Paste the Code & Enjoy:
Paste the code that you copied in the dedicated box in checkout. You will see the price reduced in no time!