Note, service available in select areas. Promotional value expires 4/1/2016. Be sure to check to see if available near you before purchase. Additional savings may be available, see forum thread for details.
Editor's Notes & Price Research
If you want updates on when Google Express is available in your area, you can sign up here - daisybeetle
$40 of credit at Google Express
The amount paid for this voucher ($15.00) with Google Express NEVER EXPIRES. The promotional value expires April 1, 2016.
Groupon new customers can use code BIGDEAL for 50% off upto $30
New customers only. Limit 1/person, may buy 1 additional as gift.
All credit must be used during your first purchase.
Only delivers to specific zip codes in select regions, see details at: google.com/express.
Online redemption required.
Contact Google Express customer support to use the paid value after expiration. Applies only to 1st purchase (even value is less than coupon value). Valid for 30 days while account is active.
Alcohol, gift cards, membership costs and shipping & service fees excluded. For complete terms and conditions, see g.co/express/trial.
Here are terms from Google Express using their promo codes: