No it costs nothing to use. They infact pay you for shopping.

Nothing. Just go through their site to click on the link of the online stores you are already shopping at

CouponCabin.com does not work on a subscription fee basis or take credit card numbers. We have no monthly or subscription fees. When you shop online through CouponCabin.com, we get a small commission from our cash back partner stores which we then share with you.