Wow Box Flash Sale: Get 25% Off 3, 6, OR 12 Month Plans! Posted by Hello Subscription on June 26, 2018. Featured / Subscription Box Coupons & Deals / WOW Box Coupons We received this box for our review. Hello Subscription may earn compensation via links in this post. Read the full disclosure Save for Later Notification WOW Box is a Japanese candy subscription coming right from Japan! They currently have a flash sale – get 25% off on all 3, 6, and 12 months plans! Use the coupon code WOW_FLASH_SALE to get the deal. Valid until 6/29. Visit WOW Box to subscribe or find out more!