Aliexpress
Click here… to search for XGIMI CC Aurora Mini Projector 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 (485.99 USD): BGBFAFF2019
Coupon (502.19 USD): aff7off
(CouponsFromChina.com tip: just apply this code 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): 64b855, PICODICOM, TECH8%, e96302, BGXGCCMID, BG3CSUM, BGGM302, BGGM584, BGaDmITAd, BGCITYADS2019
(system checks these coupons on every price check (like once per 24 hours), but you can check them out anyway)
Price history and price alert
Price history (for all/most countries) for XGIMI CC Aurora Mini Projector is here.
Price records source(s): Gearbest, Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).