There’s a lot of gift cards on sale right now in the Daily Deals section of eBay.
iConsumer is offering 1.3% cash back on eBay purchases, so make sure to go through the portal first. You always earn 2% back in eBay Bucks and then add whatever you’ll get back from your credit card. Some cards are sold by PPDG which will give you an extra 5% back in Chase UR when using your Ink cards.
You can also purchase eBay gift cards at a discount before making a purchase and then use those eBay gift cards to buy the merchant gift cards that you’re interested in. You can usually get at least 5% off eBay gift cards from different websites.