On page 21 of upcoming ad (10/19 - 10/25):
Get a $20 Visa GC via easy rebate when you buy $300 or more Visa GCs, limit 1.
Should be a good deal with Ink, or if you got the AMEX offer of $20 for $100 purchase. If you have AMEX offer (and multiple AMEX cards with the offer), then purchase 2 $200 visa gcs for $413.90, split the payments using 4 amex cards to receive $20 * 4 = $80. Subtract the $13.90 fee associated with the visa gcs which results in a profit of $66.10.
Plus, get the $20 visa gc later. Total profit $86.10
I searched before posting, so sorry if I missed it.