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. We have found one coupon for this product!
Link: Banggood product page
Coupon (483.59 USD): aff7off
(CouponsFromChina.com tip: this code has to be applied in your cart after clicking “Proceed to checkout”. Click to copy code and open shop)
Old coupons (from the oldest to the newest): TTxBG10, bgssaff9
(these coupons are old, so probably won’t work)
Price history and price alert
Here is price history (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).