Up to 4.0GHz, 1.8GHz, Core Quad Core, Display core Intel HD Graphics 620, Hard Drives Capacity 120GB/240GB/480GB, Cache 8M, Support Max 16GB Memory, CPU Intel I7-8550U, RAM 8GB.
Price history, coupons and price alert are available on this page. 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. ($289.99): BGFBXY
2. ($390.59): aff7off
3. ($390.59): bGpAnDacHeCk
apply code in your basket (cart) 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): BGXCY004, BGXCY001, PICODICOM, BGXCYX3544, bgchinafest, BGBFCR29, BGCITYADS2019, BGBFXCY02, BGJPXCY35, BGXY3585, BGXY3586, BG20X35, BGX3886, BGX3888, BGXCY88
(these coupons are old, so probably won’t work)
Price history and price alert
Here is price history (for all/most countries) for XCY X35 I7-8550U 8/480GB Mini PC. The lowest price was: $289.99.
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)).