Newegg.com has Extra 10% Off Sitewide by using promo code MASTERPASS and checkout using MasterPass as the payment method. Here is a screenshot for your reference. MasterPass is similar to PayPal and V.me. You can use American Express, Discover, MasterCard, Visa, Diner’s Club and other branded cards. It is rare to get a 10% off coupon that works on Newegg.com sitewide.
Originally posted earlier, this is just a friendly reminder as today (12/21) is the LAST DAY of this promotion.