Aliexpress
Here are coupons that you can use.
Latest price update (UTC time):
Banggood
Banggood warehouse is located in Europe 
. This is new product in my database, so I don’t know if this price is good. We have found one coupon for this product!
Link: Banggood product page
Coupon (545.99 USD): BG577171
(CouponsFromChina.com tip: just apply this code 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): BG73f036
(these codes were not working in latest coupon update, but you can check them out anyway)
Price history and price alert
There is only one database record (it was for 545.99 USD), so you can’t see price history chart.
You can set price alert (for Banggood).