Aliexpress
Here are coupons that you can use.
Latest coupon and price update (UTC):
Banggood
Banggood warehouse is located in China.
Link: Banggood product page
Coupon (70.19 USD): BGHONEY2110
Coupon (70.19 USD): BG10OFFAFF
Coupon (70.19 USD): BGwhielabel
Coupon (76.99 USD): 13f142
(CouponsFromChina.com tip: put item in your cart and apply coupon code there after clicking “Proceed to checkout”. Click to copy code and open shop)
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k
There were country-specific coupon codes published on Couponsfromchina social channels and price alerts. Coupon price may vary by country, because there’re different VAT rates, shipping cost etc. There is a chance that some latest coupons are still working:
Old coupons (from the oldest to the newest): BGOC13, BGSS10%SW, BGdragonBoat, bGhOnEy10, bgshOOp10, BGODFNJ1, BgoFErTaSchInA10, BgcLuBofErtA10, BGAFF10OFF, BGCuponation10
(probably won’t work, but you can try them out)
Price history and price alert
Here is price history (for all/most countries) for FED Horizontal Bar Pull-up Device Xiaomi Youpin.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).