Intel Core i3-5005U Dual Core 2.0GHz, 14.0 inch 1920x 1080 FHD Resolution Screen, 8GB RAM for Advanced Multitasking, 256GB SSD Storage Capacity, Intel HD Graphics 5500 GPU.
You can create price alert here, copy coupons and view price history. 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 coupon and price update (UTC):
Banggood
Banggood warehouse is located in China.
Link: Banggood product page
1. ($515.99): Email5
2. ($515.99): BGAFF10OFF
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): 424BG584, BGX4PRO5, BGX4PDDD, Wholesale20, BGFFX4P, BGJX4P7, aff7off, BGJX4P34, BGJL3D10, BGJPX4P11, BGJPX4P717, BGXJ49034, affiliate6, BGJUX45504, BGJUPP100, BGJUX4P100, BGJUX4P1001, BGJUX4P2, BGJUXP1, BGJUXP2, BGJUXP5, BGJUXP6, BGJUXP7, BGJUXP8, BGJUXP9, BGJMX4, BGJMX5, BGBFCR28, BGCITYADS2019, BGJLP1, BGJLP2, BGTT10
(these coupons are old, so probably won’t work)
Price history and price alert
Price history (for all/most countries) for Jumper EZBook X4 Pro 8/256GB i3-5005U Notebook is here. The lowest price was: $379.99.
Price records source(s): Gearbest, 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)).