Apple.com has 64GB Apple iPad Pro 12.9″ WiFi Tablet (Refurbished Gen 3 Space Gray) for $699. Shipping is free.
Specs
12.9″ 2732×2048 Retina Display
Apple A12X 64-Bit SoC Octa-Core Processor + M12 Coprocessor
64GB Internal Storage
12MP rear-facing camera / 7MP front-facing camera
WiFi 5 802.11ac + Bluetooth 5.0
USB-C Connector
Lithium-Polymer Battery (Up to 10 Hours per charge)
Facial Recognition (Face ID)