OEMProduct via eBay offers the open-box Apple 10.5" iPad Pro Smart Keyboard for $76.59 plus $4.99 for shipping. That's a buck under our mention from a month ago and the lowest price we've seen. (It's also $26 under the lowest price we could find for a factory-sealed unit.)

Note: This item is new, but the packaging may be slightly distressed. No warranty information is provided.