Aliexpress
Here are coupons that you can use.
Latest coupon and price update (UTC):
Banggood
Banggood warehouse is located in China. You can get coupon down below.
Link: Banggood product page
Coupon (54.65 USD): Cuponation9
(CouponsFromChina.com tip: apply it in your cart after clicking “Proceed to checkout”. Click to copy code and open shop)
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k
Old coupons (from the oldest to the newest): BGODFNJ1, BGODFNJ2, BgoFErTaSchInA10, bGhOnEy10, BgcLuBofErtA10, BGAFF10OFF, BGCuponation10, 13f142, BG10OFFAFF, BGwhielabel, BG10OFFAFF1, BG4d9120, BG8ec602, BG8fcd54, 2022ACTIESNL, BGFitness, BGFT666, BG787e9e
(you can check these old coupons out, but these probably won’t work)
Price history and price alert
Check out price history chart (for all/most countries) for Xiaomi 7th Counting Rebound Abdominal Wheel.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).