Aliexpress
Here are coupons that you can use.
Other warehouses/versions
This item is available in 2 another warehouse/versions!
1. China – MJX Bugs 5W B5W Drone Gray 1 Batt (-3 USD)
2. China – MJX Bugs 5W B5W Drone Gray 2 Batteries (-3 USD)
Latest coupon code price check (UTC time):
Banggood
Banggood warehouse is located in China. Hmmm… There is no active coupon in Banggood at this moment.
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): BGB5W30
(system checks these coupons on every price check (like once per 24 hours), but you can check them out anyway)
Other warehouses/versions
This item is available in 2 another warehouse/versions!
1. China – MJX Bugs 5W B5W Drone Gray 1 Batt (-3 USD)
2. China – MJX Bugs 5W B5W Drone Gray 2 Batteries (-3 USD)
Price history and price alert
Check out price history chart (for all/most countries) for MJX Bugs 5W B5W Drone Gray 3 Batteries.
Price records source(s): Gearbest, Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).