Woot has Keychron K6 68-Key Compact Wireless Mechanical Keyboard (Blue Switches) for $44.99. Shipping is free for Amazon Prime Members (must login with your Amazon account and select a shipping address in order for Woot to apply free shipping) or is otherwise $6 per order.

Features:

• Compact 65% layout Aluminum Frame RGB backlight Bluetooth wireless mechanical keyboard Compatible with Mac and Windows
• Connects with up to 3 devices via the reliable Broadcom Bluetooth 5.1 chipset and switch among them easily for multitasking needs
• Gateron Blue switch providing unrivaled tactile responsiveness on the clicky Blue switch with a durable 50 million keystroke lifespan. N-key rollover (NKRO) on wired mode or 6KRO on wireless mode
• The K6 mechanical keyboard (Aluminum Frame) can last up to 200 hours (with backlight off) with a 4000 mAh big battery