Aliexpress
Click here… to search for VIVIBRIGHT GP100 Android Projector [EU] on Aliexpress
Here are coupons that you can use.
Latest coupon and price update (UTC):
Banggood
Banggood warehouse is located in Europe 
. I don’t really know if this price is reasonable, coz there’s no price history in my DB.
Link: Banggood product page
Coupon (178.49 USD): BGPROBuscape
Coupon (188.99 USD): BGAProjector
(CouponsFromChina.com tip: paste coupon code in your cart and click Apply after clicking “Proceed to checkout”. Click to copy code and open shop)
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k
Old coupons (from the oldest to the newest): cb1d7e, BGP100UP, PICODICOM, 7f09ac, BGBFAFF2019, BGCITYADS2019, aff7off, bGpAnDacHeCk, Wholesale20, BGMPB2020, BGVV100UP, Email5, bGhOnEy10, BGdragonBoat, BGAFF7OFF, bgshOOp10, BgoFErTaSchInA10, 7bcdf9, BGHALLOWEEN, BGProjectors
(probably won’t work, but you can try them out)
Price history and price alert
It doesn’t make sense to generate price history chart, because there is one price record which is: 139.99 USD.
You can set price alert (for Banggood).