The deal is being offered today only, until 11:59PM PST (7/23/2015)! You can get 2.25% cash back on Amex Business Gift Cards when you shop through topcashback.com. If you dont have an account, you can use my referral link (we both get $10 back after you spend $20 or more).
Don’t use a Promo Code, it will cancel out the 2.25% cash back. Also any denominations over $2000 will not earn cash back. Buy as many as you can (and are able to offload in timely manner) since you have to pay shipping, which is $8.95 regardless of how many cards you buy.
Don’t use your Citi cards, they usually will get processed as cash advances.