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.
The only thing you really need to worry about is the metal heat shield removal since it is moved before the battery is unplugged, but after that it’s pretty safe
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