Bostanten via Amazon offers the Bostanten Slim Bifold Leather RFID Blocking Wallet in several colors (Coffee-1 pictured) for $19.99. Coupon code "LTX566CI" cuts it to $11.99. With free shipping for Prime members, that's a buck our May mention, $8 off list, and the lowest price we could find. It features 10 card slots, two currency pockets, and one ID window.