Woot offers Apple Watch Magnetic Fast Charger to USB-C Cable (1 m) for $13.99 (reg $29). Free shipping for Prime Members. 

Product Description:
Durable, woven cable with fast-charging capabilities for select Apple Watch models. Simply hold the connector near the back of the watch, where magnets cause it to snap into place automatically.

• Durable, woven cable with fast-charging capabilities for select Apple Watch models. Simply hold the connector near the back of the watch, where magnets cause it to snap into place automatically.
• Supports fast charging on Apple Watch Series 7 and later and Apple Watch Ultra models. Supports regular charge times on all other models.
• Compatible with all Apple Watch
• USB-C Cable Length: 1m or 3.2 feet