The deal is only today (5/52015) so HURRY! You can get 2.25% cash back on Amex Business Gift Cards when you shop through topcashback.com (using my referral we both get $10 back after you spend $20 or more). (Warning: Read BREAKING! Target to Halt Credit Card Loads for REDcard before purchasing)
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.
You can load the AMEX Gift Cards to your REDcard at your local Target. Link to gift cards