For REI Members only, REI cuts an extra $10 off orders of $50 or more when you add your REI Membership to your Google Wallet account on a mobile device. (Tap "Loyalty programs" inside the Google Wallet app to find the REI Membership program. After you've added it to your account, a unique coupon code will appear on your REI Member card page.) That's the first REI discount we've seen via Google Wallet and among the best members-only deals we've seen from REI. (A lifetime membership costs $20.) Deal ends December 31.