Just seen it on the good eReader website:
https://goodereader.com/blog/electro...that-costs-279
It's essentially a cheaper version of the Alita (sells for 350$ against 440$). It has lower hardware specs: 2GB RAM vs 4GB Alita, no SD card (but 64GB vs 32GB Alita), lower display resolution (194ppi vs 226ppi), CPU with 4 cores vs 8 cores of Alita.
It might make sense for people that just want a bigger Mars but don't want to pay the price of the Alita. For me the absence of the SD card is a deal breaker, as I have a huge collection of comics (way more than 64GB), but for others might be great.
In any case, it's the cheapest 10" ereader currently in the market, I believe.