Since from what I read online there is a considerable amount of people who are switching to the ASUS Ally. (I would never switch because the ally lacks the touchpads and is not really capable of gaming at really low TDP like the steamdeck - which directly impacts the battery life) Anyway, you may have luck on second hand steamdecks, which might be an option for you, depending on your budget.

Edit: ooor depending on your location, if you happen to live somewhere where it’s not officially sold