Best Buy is currently offering a deal on Delta gift cards: buy a $250 Delta gift card and get an extra $25 Best Buy gift card. The deal is not huge, but Delta gift cards are currently one of the best tools for triggering the AMEX airline fee reimbursement. If you do not have a better way to buy cheaper gift cards, this promotion is still decent. If you selected Delta as your airline, using a gift card plus a certain amount of cash can currently still trigger the reimbursement successfully.
For AMEX airline fee reimbursement, please refer to the article below:
https://www.uscreditcards101.com/how-to-get-amex-airline-credit-reimbursement/