A cheaper way to get a Steam Deck of your own.
Closeup of a person working to refurbish a piece of hardware called the Steam Deck.

Valve just announced that they are now offering Certified Refurbished Steam Decks. These not-quite-new Steam Decks start at $319 (USD).

The 64GB model is the one that starts at $319. The 256GB model is $419 and the 512GB is $519. This is a savings of roughly $70, $110, and $130 respectively from buying a new unit.

All of these Certified Refurbished Steam Decks have been refurbished by Valve and "have been thoroughly tested." Valve says that they meet or exceed the performance standards of new units. Each of these refurbished units have undergone a complete factory reset and software update.

Each Certified Refurbished Steam Deck has been thoroughly tested to the same high standards as our retail units. Every device goes through a complete factory reset, software update, and an extensive examination involving over 100 tests at one of Valve's facilities. Among the tests are all controller inputs, the audio system, the screen, and internals. Battery health is also assessed to ensure proper functionality and longevity.
Obviously, these Certified Refurbished Steam Decks are limited in stock but supplies will be replenished over time. All units come with the same one-year warranty as a new Steam Deck purchase. All come with a refurbished power supply that has been tested but may have minor cosmetic marks. All come with a carrying case and quick start guide.

Valve also notes that GameStop is also selling their own refurbished Steam Decks to Pro members at select locations. These units were not personally refurbished by Valve but are still probably pretty good and still probably cheaper than buying new.