It's a good deal.
RAM can't be upgraded but Storage absolutely can, it's just a standard 2280 m.2 drive, you can even chuck a second 2242 drive in if you remove/never had WWAN (LTE/5G modem).
Edit: If you're using Linux, grab a cheap Intel Optane M10 drive from AliExpress, 16GB drives are <$5 32GB and 64GB are ~$1/GB- they have incredible endurance and 250MB/s Q1T1 random read (better than any consumer NAND ssd...) - perfect for swap partition on a 'low' ram machine.