I have some smartwatches/bands for sale - 50% or more off retail price, including postage:

Withings Move ECG $ 100 https://www.jbhifi.co.nz/health-fitness-wearables/withings/withings-move-ecg-monitor-activity-watch-black/372080/ 

Huawei Watch Fit $ 100 https://www.pbtech.co.nz/product/WTHHUA55025869/Huawei-Watch-Fit-Smart-Watch-Graphite-Black-Built

Huawei Band 6 $ 65 https://www.pbtech.co.nz/product/WTHHUA55026647/Huawei-Band-6-Fitness-Trackers---Black-All-Day-SpO

Fitbit Blaze $ 30 https://www.noelleeming.co.nz/prefitbitblaze (this is an old model, not available in retail anymore, link just for photo. Comes with unused silicone strap and a brown leather strap).