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KRTALS-US via Amazon [amazon.com] has KRTALS Magnetic MagSafe Phone Wallet Card Holder w/ RFID Blocking (Various) on sale for $8.99 – $3 off when you apply promo code GU325YS5 at checkout = $5.99. Shipping is free w/ Prime or on orders $35+.

Note: Amazon promo codes don’t always apply seamlessly. If you run into this issue, try refreshing the page, re-entering the code, or checking after you select a payment method to confirm whether it already applied.