Core idea: Walmart/Sam's Club gift cards can be used interchangeably
Key point 1: Buy Sam's Club gift cards at 10% off through Cash App. You can stock up on one discounted $200 GC per day at 10% off. See this promo for reference:
Key point 2: Click through to Walmart via Drop, then pay with a Sam's Club gift card to earn 10% back. Promo reference: open the Drop app directly