UrbaneBox Halloween Sale: Get $20 Off Your First Box! Posted by Hello Subscription on September 17, 2018. Subscription Box Coupons & Deals / UrbaneBox Coupons Hello Subscription may earn compensation via links in this post. Read the full disclosure Save for Later Notification UrbaneBox is having a Halloween Sale! Get $20 off your first box with coupon code SPOOK20. Valid until 10/31. Visit UrbaneBox to subscribe or find out more!