The $10 rebate comes in the form of a Visa Prepaid Card.
It lasts for 6 months, and expires if not used.
To make the funds last forever, use the card to buy yourself a $10 gift card from Amazon, from Best Buy, from Whole Foods, or from a local store.
To get the rebate, follow their purposefully-difficult instructions:
Print and carefully fill out the rebate form with small penmanship.
Using scissors, cut-out the UPC from the product box after you receive it.
Enclose a copy of your Macy's sales receipt, and circle the purchase date on the sales receipt.
Check the appropriate offer on the rebate form, and write the offer number on the address part of the envelope.
Limit one rebate per envelope, so repeat for each eligible item you purchased.
Before doing this deal, it's wise to ask yourself if you have time to complete the rebate in 30 days.