Gentleman’s Box Flash Sale: First Box $9! Last updated by Hello Subscription on April 29, 2019. Subscription Box Coupons & Deals / Gentleman's Box Coupons Make the first comment! Hello Subscription may earn compensation via links in this post. Read the full disclosure Save for LaterGo to commentsNotification The Gentleman’s Box has a flash sale for the Classic Box! Through 4/30 ONLY get your first Classic Box for only $9 ($20 savings!) with coupon code TRYCLASSIC! See our reviews of The Gentleman’s Box classic box to know more about this subscription!