AUN AKEY6S Projector (Banggood, Aliexpress: Support Google play store, Memory: 1G RAM / 8G ROM, Support AC3 file decoding, System: Android 6.0 OS, CPU: 4-Cores ARM 64, GPU: ARM A35 GPU, Support 4K online video, WIFI: 2.4G, Bluetooth: Bluetooth 4.0, APK online install (the best price with coupon)).
You can create price alert here, copy coupons and view price history. 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 coupon and price update (UTC):
Banggood
Banggood warehouse is located in China.
Link: Banggood product page
1. ($242.16): BGPROBuscape
2. ($256.40): BGAProjector
apply code in your basket (cart) after clicking “Proceed to checkout”. Click to copy code and open shop.
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/feV
Old coupons (from the oldest to the newest): BGdragonBoat, BG0723W6, BGAK164, BGAA164, BGAFF7OFF, BGAA1640, BGAA1641, bgshOOp10, BGAA1642, BGAA1643, BgoFErTaSchInA10, 7bcdf9, BGALVP21, BGProjectors
(you can check these old coupons out, but these probably won’t work)
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. Europe – AUN AKEY6S Projector [EU] ($-3)
Price history and price alert
Here is price history (for all/most countries) for AUN AKEY6S Projector. The lowest price was: $199.99.
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)).
. I can’t tell you if this price is good – not enough records in my database, so I won’t judge.