If true, that means both configurations are within spitting distance of Valve’s comparative pricing, where a 256GB Steam Deck costs $530 and a 512GB Steam Deck costs $650, respectively. But Valve also sells a $399 Steam Deck that comes with 64GB of eMMC storage, which enthusiasts often open to replace that SSD.
The original ROG Ally leak came from Best Buy, and it appears that Best Buy is the source of this one too. This will likely be the least expensive configuration of the ROG Ally, though it’s possible Asus could follow Valve’s lead and put out an eMMC model.
Update: Added corroboration from Roland Quandt, who suspects he has the same source as SnoopyTech for this data.