Xiaomi INOVEL Smart Mini Projector Me2c 1080P (Banggood, Aliexpress: Small size 220x 190x 70mm / only ocuppy a small place in your house, RAM: 2GB DDR3, CPU: Cortex-A53 64bit, Support 3D, ROM: 16GB, Speaker: 3Wx 2, HDR 10 fully supported / showing you the real world through the screen, Built-in MIUI TV operating system as Xiaomi TV, Resolution: 1920x 1080 / Support 4K, Throw ratio: 1.2: 1, Lumen: 1100, Aspect ratio: 16: 9, bluetooth: 4.0, Display size: 50 – 300 inches adjustable, Display technique: DLP 0.4 Inch DMD RGB-LED, WIFI: 2.4G / 5G, Support 3D / you can enjoy 3D Movies in your house, OS: MIUI TV(based on Android 6.0), Support HDR10, 1100LM / full HD 1080P supported / it allows you to built a theatre in your own house, 50 to 300 inches adjustable screen / you can adjust it to fit your home, GPU: Mali-T830 (the best price with coupon)).
Basically copy coupon, view price history or create e-mail price alert. What is 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 found coupon for you. Check this out.
Link: Banggood product page
1. ($845.99): 7bcdf9
you should apply the coupon in your cart after clicking “Proceed to checkout”. Click to copy code and open shop.
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/feV
Old coupons (from the oldest to the newest): 451feb
(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 Xiaomi INOVEL Smart Mini Projector Me2c 1080P. The lowest price was: $786.59.
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)).