Get Cashback Easily
- Join for FREE with an email and password
- Click the "Start Shopping" button or choose a coupon
- Cash back will be added to your Extrabux account!
Knock Knock Cash Back Detail
- Cash Back
- Online Purchases
- 4% Get Cash Back
Knock Knock Restrictions Apply:
Use of coupon/promotional codes not listed on Extrabux may void Cash Back.
Do make sure your shopping cart is empty when you click through to the store from Extrabux.
Knock Knock Promotions
Free shipping on orders $100+ for Canadian customers at Knock Knock
4% Cash Back 5% Super Cash Back