The Apple Watch Series 3 is now available on Amazon for as low as US$231. While this is still substantially higher than the Xiaomi Mi Band 4, LTE capabilities, superior build quality and iOS integration might still make the Series 3 a solid buy.
https://www.notebookcheck.net/Apple-Watch-Series-3-sells-for-just-US-231-enough-to-sway-Xiaomi-Mi-Band-4-and-Amazfit-X-buyers.466034.0.html