Aliexpress
Click here… to search for Skystars 2019 G730L GPS INAV Drone BNF on 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 (246.60 USD): bGhOnEy10
Coupon (246.60 USD): BGAFF10OFF
Coupon (246.60 USD): BGdragonBoat
Coupon (246.60 USD): BGRC902
(CouponsFromChina.com tip: you should apply the coupon 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): BGss730, bgssaff9, AFfbG10, BGG730Les, BG30INAV, 502C6B, BGBFCR25, BGCITYADS2019, BGVDay10%off, BGMPB2020, BGSS10%SW, bgshOOp10
(these coupons are old, so probably won’t work)
Price history and price alert
Check out price history chart (for all/most countries) for Skystars 2019 G730L GPS INAV Drone BNF.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).