Aliexpress
Here are coupons that you can use.
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. China – Eachine E520S 1080P 5G WiFi Drone Three Batteries (-3 USD)
Latest price update (UTC time):
Banggood
Banggood warehouse is located in China. There are no active coupons for this product, but the price is pretty low isn’t it?
Link: Banggood product page
Price: -3 USD
It looks like this item is out of stock in Banggood. If you found it then please send me the link. I will replace it.
Click here to search on Banggood!
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k
Old coupons (from the oldest to the newest): bGhOnEy10, BGTT10, 7bcdf9, Eachine11, bgshOOp10, BGHALLOWEEN, BG11EACHINE, BGEachine2021, BGCuponation10, BGEachine10, BGquads, BG00c906, ADMITAD2212, 2022ACTIESNL, BG40b3aa, BGRCEachine, BGCAPITALOS8, BG8FORMULAMX
(there’s a little possibility that old coupon will work)
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. China – Eachine E520S 1080P 5G WiFi Drone Three Batteries (-3 USD)
Price history and price alert
Here is price history (for all/most countries) for Eachine E520S Drone Two Batteries.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).