you pay for something upfront but then you get a percentage cash back every quarter based on your online purchases. just checked and theknot.com is 6.5% cash back and it's free to join and really works - i use it all the time
try these codes too
coupon code: 3DSRMN
20% off, no minimum purchase
coupon code: EXTRA26 Get 25% off on orders of $150.
