Walmart gift cards and egift cards can be used at Walmart stores, on Walmart.com, at Walmart and Sam's Club gas stations, in Sam's Club Stores, at Samsclub.com and on Vudu.com If the gift card user is not a Sam's Club member, a 10 percent surcharge will be added to all purchases.
At checkout, you can use up to five gift cards at one time or a combination of a gift card and other payment method such as credit/debit card or Pay with Cash when available.
For info on limitations visit:
Gift Card FAQs