Aliexpress
Click here… to search for DJI Spark Fly More Combo Refurbished Drone on Aliexpress
Here are coupons that you can use.
Latest price update (UTC time):
Banggood
Banggood warehouse is located in Hong Kong. There is one great coupon!
Link: Banggood product page
Coupon (483.59 USD): aff7off
(CouponsFromChina.com tip: paste coupon code in your cart and click Apply 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): TTxBG10, bgssaff9
(these codes were not working in latest coupon update, but you can check them out anyway)
Price history and price alert
Check out price history chart (for all/most countries) for DJI Spark Fly More Combo Refurbished Drone.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).