Prime Members: Master Lock Sliding Door Stopper and Door Security Bar $17.50 or less + Free Shipping

Master Lock Sliding Door Stopper and Door Security Bar, Adjustable for Hinged and Sliding Doors, Compact Enough to Travel for Hotel Security, White, 270EC. Non-Prime: $20.88, Prime: $17.48. Update: there could be a targeted 30% coupon, bringing it to $12.23. Available at Amazon.