: Standard Visa "Gift" cards (with large "Gift" text) are often blocked by the system. However, fixed-denomination prepaid debit cards (e.g., set amounts like $25, $50, or $100) are sometimes categorized differently in Walmart’s point-of-sale system.
: A marketplace where you set your own price. After the card sells, you can withdraw the funds to a bank account and purchase a Visa card elsewhere.
Some shoppers have found success by distinguishing between a "gift card" and a "prepaid debit card" at physical checkout.
If you want to keep as much of the value as possible (closer to 100%), use the Walmart gift card to buy high-demand physical products and resell them.