CPU Snapdragon 636 1.8GHz Octa core, OS ZUI 5.0 (based on Android 8.1), Resolution 2246*1080 pixels, RAM 6GB, Display Size 6.2 Inch 18.7: 9, ROM 128GB.
Basically copy coupon, view price history or create e-mail price alert. You probably want to know what is the 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 price update (UTC time):
Banggood
Banggood warehouse is located in Hong Kong. There is one coupon right now! Check this out.
Link: Banggood product page
1. ($152.99): Email5
apply it in your 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): BGS5P8, 2880c7
(probably won’t work, but you can try them out)
Price history and price alert
Check out price history chart (for all/most countries) for Lenovo S5 Pro 6/128GB Global. The lowest price was: $134.99.
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)).