Aliexpress
Here are coupons that you can use.
Latest coupon code price check (UTC time):
Banggood
Banggood warehouse is located in China. There is one coupon available! Pretty cool, huh?
Link: Banggood product page
Coupon (296.99 USD): BGProjcc
(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): BGXRMPP, BG31e166, BGSaleFeb8, BGSaleAD, BG589b2e, BGMARCHSALE
(probably won’t work, but you can try them out)
Price history and price alert
Check out price history chart (for all/most countries) for Xiaomi Redmi Projector Pro 1080P 1.5/16GB.
Price records source(s): Banggood
Click on image to enlarge.
You can set price alert (for Banggood).