Go down and check coupons out. Remember to check price history if it is available. You probably want to know what is the best price?
Display: 5.5 inch, 1920x 1080 Pixel FHD bezel-less display with Corning Gorilla Glass 4, metal frame, RAM + ROM: 4GB RAM + 64GB ROM, CPU: MTK6750T Octa Core 1.5GHz, Camera: 5.0MP front camera and 13.0MP + 5.0MP back cameras, System: Android 7.0, 4G: FDD-LTE 800/1800/2100/2600MHz
Aliexpress
There’re some similar (or not) items on Aliexpress
Click here to search by yourself. Here are coupons that you can use.
Latest coupon code price check (UTC time):
Banggood
Banggood warehouse is located in China.
Link: Banggood product page
1. ($195.26): BGaDmITAd
2. ($199.55): od7off
3. ($201.70): affiliate6
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/5cd
Old coupons (from the oldest to the newest): aff7off, bgssaff9
(system checks these coupons on every price check (like once per 24 hours), but you can check them out anyway)
Price history and price alert
Here is price history (for all/most countries) for UMIDIGI Crystal 4/64GB.
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)).