Gentleman’s Box Flash Sale: Get 50% Off! Posted by Hello Subscription on October 31, 2019. Subscription Box Coupons & Deals / Gentleman's Box Coupons Hello Subscription may earn compensation via links in this post. Read the full disclosure Save for Later Notification The Gentleman’s Box has a flash sale for the Classic Box! Get 50% off your first box when you use the coupon code STEAL50! Ends 11/1! See our Gentleman’s Box reviews to find out more about this subscription! Are you getting The Gentleman’s Box Classic Box?