noun / verb
rebate
REE-bayt/ˈriːbeɪt/
A return of part of an amount already paid.
The shopkeeper gives the customer a rebate after her purchase.

Etymology
Re- ('back,' or perhaps 'repeatedly') combines with abattre, 'beat down.' Beating a sum down became a deduction or discount, then money returned after payment.
In context
once you join you will automatically receive a cash back rebate of two to twenty percent of your purchase
More examples
- The company rebated part of the installation charge.
- She submitted the receipt to claim her rebate.
- The offer promised a fifty-dollar rebate.
Forms
rebate · rebates · rebated · rebating