Aliexpress
Here are coupons that you can use.
Latest coupon code price check (UTC time):
Banggood
Banggood warehouse is located in China.
Link: Banggood product page
Coupon (505.75 USD): BGdragonBoat
Coupon (554.94 USD): Email5
Coupon (554.94 USD): bGhOnEy10
(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): BGJmGON7L2, aff7off, BGaDmITAd, bgchinafest, BGBFAFF2019, BGCITYADS2019, bGpAnDacHeCk, BGMPB2020
(probably won’t work, but you can try them out)
Price history and price alert
Here is price history (for all/most countries) for JMGO N7L Projector 2/16GB Chinese Version.
Price records source(s): Banggood
Click on image to enlarge.
You can set price alert (for Banggood).