Ebay offers Satechi Slim X3 Bluetooth Backlit Keyboard for $49 (reg $75) with free shipping.

Product Description:
All the features you love in one slim and compact keyboard. Satechi’s Slim X3 Bluetooth Backlit Keyboard is the perfect accessory to your modern desk space, allowing you to work with ease wherever creativity takes you. It features an extended keyboard layout with MacOS function keys, easy-to-use multi-device Bluetooth, adjustable backlit keys, and a rechargeable USB-C port.

• Dimensions (Overall): .4 Inches (H) x 4.5 Inches (W) x 16.65 Inches (D)
• Weight: .97 Ounces
• Connection Type: USB-C
• Wireless Technology: Bluetooth
• Switch Type: Mechanical
• Primary use: Business
• Backlit Keyboard: Backlit Keyboard
• Battery: 1 Non-Universal Lithium, Required, Included