Glass dust cover Glass dust cover, Auto Focus Overall Auto Focus, 317*265*112mm 317*265*112mm, Mijia Laser Projector Xiaomi Laser Projector 1S.
Basically copy coupon, view price history or create e-mail price alert. What is the best price?
Aliexpress
There’re some similar (or not) items on Aliexpress
You can use link bot to get even lower price:
Click here to search by yourself. Here are coupons that you can use.
Latest price update (UTC time):
Banggood
Banggood warehouse is located in China. I couldn’t find any coupon for this product on latest product update.
Link: Banggood product page
Price: $-3
It looks like this item is out of stock in Banggood. If you found it then please send me the link. I will replace it.
Click here to search on Banggood!
Additional Banggood coupons: first page and second page
Old coupons (from the oldest to the newest): BG3214b6, BG473571S, BG96f5dd, BG60ca7f, BGea764c, BGa11e60, BGProj, BGSMJL, BG589b2e, BGMARCHSALE, BGProjcc
(probably won’t work, but you can try them out)
Price history and price alert
Here is price history (for all/most countries) for Xiaomi Laser Projector 1S ALPD 2400 ANSI Lumens 4k. The lowest price was: $989.99.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood and Aliexpress (only if product name will be the same as on Banggood and I will post it on social media though, so it’s more like Banggood price alert)).