Ebay offers Open-Box Apple Watch Ultra 3 49mm GPS + Cellular Smart Watch for $599 (reg $799) with free shipping.

Product Description:
This is an Apple Watch Ultra 3 (49mm), featuring both GPS and Cellular connectivity in a durable Titanium Case. It comes with a Black Ocean Band, perfect for rugged use and aquatic activities. This high-end smartwatch is designed for athletes and adventurers, offering advanced features and long battery life. 
Functionality: The watch is expected to be fully functional, tested to ensure all features—including GPS, cellular connection, action button, display, sensors, and water resistance—are working correctly.Technical Specifications

• Model: Apple Watch Ultra 3
• Case Size: 49mm
• Case Material: Titanium
• Connectivity: GPS + Cellular
• Band: Black Ocean Band
• Water Resistance: Exceptional water resistance suitable for diving (specific rating based on Ultra series standards)