Aliexpress
Here are coupons that you can use.
Latest price update (UTC time):
Banggood
Banggood warehouse is located in China.
Link: Banggood product page
Coupon (120.89 USD): BGAFF7OFF
Coupon (120.89 USD): BGPUTG
Coupon (120.99 USD): 7bcdf9
(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
Old coupons (from the oldest to the newest): BGPY02, PICODICOM, 2019SPEDM, aff7off, BGPP9, bgchinafest, BGPUYWP, BGPUUY, bGpAnDacHeCk, BGHOMEAPP, BGHCLE15
(these coupons are old, so probably won’t work)
Price history and price alert
Check out price history chart (for all/most countries) for PUPPYOO WP9005B Cyclonic Vacuum Cleaner.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).