Fanchest Flash Sale Coupon: $10 Off Any Box! Posted by Hello Subscription on April 20, 2018. Subscription Box Coupons & Deals / Fanchest Coupons Hello Subscription may earn compensation via links in this post. Read the full disclosure Save for Later Notification Fanchest has a deal for this weekend only! DEAL: Use coupon code APRIL10 to save 15% OFF any chest through 4/22 Are you getting Fanchest today?