You can create price alert here, copy coupons and view price history. Best price?
Aliexpress
There’re some similar (or not) items on Aliexpress
| Image | Product (link) | Price | Coupons |
|---|---|---|---|
 |
HD Mecool KP2 SE Projector Box with DHL Delivery 1080P Home Cinema WiFi FHD 2.4G/5G Auto Focus Linux and Netflix Certification | $384.28 | – |
Click here to search by yourself. Here are coupons that you can use.
Latest coupon and price update (UTC):
Mecool KP2 SE Projector 1080P Netflix Certified Linux OS 600ANSI Lumens 5G WIFI Electric Focus Home Theater – EU Plug
Banggood
Banggood warehouse is located in China. I am tired of searching coupons, but I found one for you…
Link: Banggood product page
1. ($199.99): BGa6b63a
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 and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): BGMARCHSALE, BG589b2e, BGProjcc, BGMCSE22
(I don’t think these’re gonna work, but you can try ’em out anyway)
Price history and price alert
Do you need price history chart (for all/most countries) for Mecool KP2 SE Projector 1080P? There we go.
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)).