https://amzn.to/4hlgQpU EverPlus 800-Lb Door Reinforcement Security Lock for Inward-Swinging Doors (Black, EPDLB001-1) on sale for $9.99 - 35% off when you apply the promo code LP0K4L5N at checkout = $6.49. Shipping is free with Prime or on $35+ orders.