TL;DR: Steam briefly showed options to buy refurbished Steam Decks for the following prices:
- 64gb - $319
- 256gb - $419
- 512gb - $519
The steam page has since been taken down, but will hopefully go live officially soon.
Edit: That was quick, refurbished units available now.
Deck is very DIY friendly, including potential repairs. So it should be fairly safe to assume that it work just as new unit - especially coming from Valve itself.
I dunno about DIY at home though.
The video by Valve themselves say not to open Steam Deck, then shows and explains why by showing how tightly coupled the hardware is.
They won’t stop you of course.
They have to say not to open so that they aren’t liable for people breaking it when opening it. Some aspects of the hardware are hard to work with, like replacing the battery, but joysticks and screens (the main things I would expect people to need to repair) are surprisingly easy to access for a modern portable device.
After cracking open my own Deck, replacing the SSD or Thumb sticks is dirt simple. There are even drop in Hall effect sticks you can get. The only real trouble is if you need to replace the battery. The screen and battery are definitely the hardest things to replace in the Steam Deck.
PS: REMOVE THE MICROSD FIRST! I’ve seen people forget their card is in there and literally snap it in half when opening up their Steam Deck.
