Support File Formats: EPUB / MOBI / PDF / FB2 / TXT / JPG / PNG / GIF, System: Android 6.0, Battery: 3100mAh, Charging time: 4 – 5 hours, etc., Screen: 7.8 inch 300ppi E-ink touchscreen. High resolution 1404x 1872, Reading light: 24 scales adjustable reading light, front light (warm and cold light switching), Free leather case included.
Basically copy coupon, view price history or create e-mail price alert. 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. ($223.19): elec
2. ($223.19): AFfbG10
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): ee9063
(these codes were not working in latest coupon update, but you can check them out anyway)
Price history and price alert
Here is price history (for all/most countries) for Likebook Mars T80D 7.8 inch Ebook Reader. The lowest price was: $194.99.
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)).