Video Formats avi/mpg/dat/vob/div/mov/mkv/rm/rmvb/mp4/mjpeg/ts/trp/wmv/asf/flv, WiFi, Image Scale 16: 9, Bluetooth Bluetooth 4.0, External Subtitle Supported Yes, Compatible with Sony PS4, Bluetooth, Brightness 2000 LM, Xbox, Image Size 100 – 500 inch, Power Supply 100-240V, Function 3D, Picture Formats JPG/PNG/BMP, Material Aluminum Alloy, Interface 3.5mm Audio, Noise (dB) 30dB, Projection Distance 0.1 – 0.5m, Throw Ration 0.233: 1, USB, Resolution Support 4K, HDMI, DVB-T, Contrast Ratio 1500: 1, 000h, 4: 3, Native Resolution 3840 × 2160, Built-in Speaker Yes, Model U1, SPDIF, Audio Formats mp3/aac/wma/rm/flac/ogg/mpeg audio/ac-3/dts/mpeg-1/amr/cooker/pcm/ogg vorbis, Display type DLP, WIFI 802.11 b/g/n/ac, DVB-T Supported No, Lamp Life 30, Speaker, RJ45.
Basically copy coupon, view price history or create e-mail price alert. Let’s see what best price is ATM.
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.
Link: Banggood product page
1. ($2227.25): BGAFF7OFF
2. ($2385.89): 7bcdf9
3. ($2387.89): Email5
4. ($2387.89): bGhOnEy10
put item in your cart and apply coupon code there after clicking “Proceed to checkout”. Click to copy code and open shop.
Additional Banggood coupons: first page and second page
Old coupons (from the oldest to the newest): bgssaff9, aff7off, BGaDmITAd, bgchinafest, BGCITYADS2019, BGBFAFF2019, Wholesale20, bGpAnDacHeCk, BGMPB2020, BGdragonBoat, bgshOOp10, BgoFErTaSchInA10
(probably won’t work, but you can try them out)
Price history and price alert
Price history (for all/most countries) for JMGO U1 DLP Projector is here. The lowest price was: $1879.99.
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)).