Aliexpress
Here are coupons that you can use.
Latest price update (UTC time):
Banggood
Banggood warehouse is located in Europe 
. There’s only 1 record in my database, so I have no idea if the price is OK.
Link: Banggood product page
Coupon (29.80 USD): Cuponation9
Coupon (29.80 USD): 9OFFSUMMER
Coupon (30.13 USD): hoNEYbGdeAlS
(CouponsFromChina.com tip: this code has to be applied 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): BGHB218, BGXPAP224, BGHECARE1, BG4ee866
(system checks these coupons on every price check (like once per 24 hours), 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: 27.84 USD.
You can set price alert (for Banggood).