Aliexpress
Here are coupons that you can use.
Latest coupon code price check (UTC time):
Banggood
Banggood warehouse is located in Europe 
. Uhm… There’s no price history (in my database) for this product right now.
Link: Banggood product page
Coupon (879.99 USD): BGissamZ20C
Coupon (879.99 USD): Z20C2022
Coupon (889.99 USD): Z20C2021
(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): 7bcdf9, BGEBSC15, BGZ20CMS
(these codes were not working in latest coupon update, but you can check them out anyway)
Price history and price alert
It’s a new item in our database, so I can’t create price history chart. We have saved this price in database: 899.99 USD.
You can set price alert (for Banggood).