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 (345.79 USD): Cuponation9
Coupon (345.79 USD): BgGoodie9
Coupon (349.59 USD): BG8ReviTrage
(CouponsFromChina.com tip: apply it 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): BGVenomH, BG874251, BGJUNEGSG9, BGAM30, 9OFFSUMMER
(sometimes old coupons work, so you can check them out (this site checks them on every price update))
Price history and price alert
Here is price history (for all/most countries) for Flywoo Venom H20 2inch HD 4S Drone Caddx Polar Nano.
Price records source(s): Banggood
Click on image to enlarge.
You can set price alert (for Banggood).