Up until now, buying a Steam Deck meant first purchasing a reservation, then waiting weeks or months until you came to the front of the queue before you could complete your purchase. No longer. Valve say that they’ve increased their manufacturing capacity such that you can now buy a Steam Deck without a reservation.
They’ve also made the Steam Deck’s dock available to purchase. It costs $80/£80 and has the same 1-2 week delivery estimate as the Deck itself.