Ebay offers Open-Box Apple Magic Keyboard for 13" iPad Air and Pro for $156 (Reg $349) with free shipping.

Product Description:
The Magic Keyboard is an amazing companion for iPad Pro 12.9-inch. It features an incredible typing experience, a trackpad that opens up new ways to work with iPadOS, a USB-C port for pass-through charging, and front and back protection. The Magic Keyboard has a floating cantilever design, allowing you to attach iPad Pro  magnetically and to smoothly adjust it to the perfect viewing angle for you.
Features:

• Color: Black
• Comfortable backlit keys
• Scissor mechanism with 1mm travel
• Quiet, responsive typing
• Designed for Multi-Touch gestures and the cursor in iPadOS
• Smooth angle adjustability delivers the perfect viewing angle
• USB-C port for charging iPad Pro and iPad Air, freeing up the port on the iPad for other accessories
• Folds into a case to provide front and back protection for traveling with iPad Pro and iPad Air

System Requirements:

• iPad Pro 12.9-inch (3rd, 4th, or 5th generation) running iPadOS 14.5 or later.