That looks to be very good value.
I had an original GPD Pocket, didn't like the nub "mouse", so I upgraded to a Pocket 2 with an actual (tiny) mousepad & buttons, which I still use. They now do a Pocket 3,
tech specs here,
,
..
The basic version is twice the price of the UDKED but slightly bigger & better screen, similar CPU, slightly less RAM, more storage, actual mousepad & buttons, built-in RJ45 & longer-lasting battery. The Pocket 2 can be charged over USB-C, the Pocket 3 comes with a power brick but perhaps can also be charged via USB-C. The Pocket 2 is well built, feels solid; the screen is no good in direct sunlight but fine if shaded. It certainly feels like a quality product and can fit inside a Chino's type hip pocket.
Edit: The UDKED appears to be a generic
AliExpress notebook & has several names, NWNLAP, Topo, Pipo.