Note, service available in select areas. Promotional value expires 8/29/2016. Be sure to check to see if available near you before purchase.
Editor's Notes & Price Research
If you want updates on when Google Express is available in your area, you can sign up here. Refer to the forum thread for additional savings ideas. - johnny_miller
Was looking for ways to get Lego sets cheaper and stumbled upon this:
Mine saids West Coast San Francisco but just type in " Google Express " under the search field for your area. Either way, it's a code that will work regardless what area you're in.
Use coupon code TAKE10 (exp. 6/18) to take an extra $10 off!
Comes out to $5.00 for $40 credit to use on Google Express
Edit: seems like the code TAKE10 is targeted, sorry if it doesn't work for some people
Edit 2: AMEX people!, there is an AMEX offer for Google Express, spend $30 get $15 statement credit back, I used mine last night in conjunction with this offer, saved $50 off my purchase in total...check if you have it
Edit 3: T&C for AMEX offer (YMMV on AMEX offer, I got it on AMEX Blue Cash Card) that confirmed stacks with Groupon GE code
Get a one-time $15 statement credit by using your enrolled Card to spend a minimum of $30+ in one or more transactions online at Google Express by 7/31/2016. See terms for exclusions.
Enrollment is limited. Offer is non-transferable. Offer valid only for purchases made on Google Express with enrolled American Express Card. Must add offer to eligible American Express Card and make a purchase using Google Express with that same Card set as the Google Express payment method to redeem. To see if delivery is available to your market, please visit google.com/express. Limit 1 statement credit per American Express online account. Offer only available in the United States. Statement credit will appear on your billing statement within 90 days after 7/31/2016, provided that American Express receives information from the merchant about your qualifying purchase. Note that American Express may not receive information about your qualifying purchase until all items from your qualifying purchase have been provided/shipped by Google Express. Statement credit may be reversed if qualifying purchase is returned/cancelled. If you receive a replacement Card during the offer and use that Card to enroll, you must update your Card on file with Google Express. If American Express does not receive information that identifies your transaction as qualifying for the offer, you will not receive the statement credit. Google Express is a trademark of Google Inc