Process technology 14nm, Cache Storage, Power consumption 4W-6W, Cache 2MB L2, CPU Type Intel Celeron N3450, CPU Frequency 2.2GHz, Quad Core, Screen size 13.3 inch, RAM 6GB, Screen resolution 1920x 1080 (FHD), RAM Type DDR3, Display Ratio 16: 9, Hard Disk Memory 128GB EMMC.
Basically copy coupon, view price history or create e-mail price alert. 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 coupon and price update (UTC):
Banggood
Banggood warehouse is located in China. Well, there is one coupon available right now.
Link: Banggood product page
1. ($287.99): BGCITYADS2019
this code has to be applied in your 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/i1u
Old coupons (from the oldest to the newest): 1B1G1LAP1, 1B1G1YE4PO, 1225CAR
(probably won’t work, but you can try them out)
Price history and price alert
Here is price history (for all/most countries) for YEPO 737A 6/256GB. The lowest price was: $263.99.
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)).