Costco through Google Express is offering its members 100-Count USPS Forever Stamps Booklet for $33.75 (48.75 – 15 coupon) with Free Shipping for a limited time. To get the discount, use the coupon code: NEWYEAR15 at checkout. You must also provide your Costco membership number to get this offer. If you are new to Google Express, you can also get an additional $10 credit to use towards your first purchase of $10 or more when you signup for an account with our referral link.