Aliexpress
Click here… to search for Diatone MXC TAYCAN 349 Drone DJI Goggles Combo on 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 (756.49 USD): BGBFTY349
Coupon (800.99 USD): bGhOnEy10
Coupon (800.99 USD): BgcLuBofErtA10
(CouponsFromChina.com tip: apply code in your basket (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): BGANDJICOMBO, BGDJIMXC349
(there’s a little possibility that old coupon will work)
Price history and price alert
Check out price history chart (for all/most countries) for Diatone MXC TAYCAN 349 Drone DJI Goggles Combo.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).