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 (149.68 USD): CouponsdeFPV
Coupon (153.01 USD): BGJON8
(CouponsFromChina.com tip: put item in your cart and apply coupon code there 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): BGTT10, BgcLuBofErtA10, BGGL78X, BG10RACING, BGLIGO78X, BGAFF10OFF, 7bcdf9, BGMATT7, BGDAVIS, Drones6, BANGGOODSD, CouponsDE, 00c906, Tabby20
(there’s a little possibility that old coupon will work)
Price history and price alert
Price history (for all/most countries) for GEELANG LIGO78X Drone is here.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).