less. because these handhelds aren't subsidised. even tho they have a partnership with Microsoft here, Asus still has to make back the R&D and sell the system at a price that gives them a decen margin to do so and make a profit.
a console doesn't have to do this. those can be sold as a loss or with 0 profit margins because accessories, game licenses and online subscriptions are the money makers.
if the Switch 2 wasn't a console, but a PC handheld made by Asus, HP, Ayaneo etc., it would probably cost 600€ at a minimum, with the potential for more than that.