Nintendo Switch v2 + Mario Kart 8 $449 + Shipping (Free with Market Club) @ The Market
Edit: Stack with cashback deal here to bring the final cost down to $428.80 + Shipping.
Originally $479 but Market coupons bring it down further.
Mario Kart 8 is often considered a must have and sells for $50+ secondhand - this package comes with a download code.
This is the updated 2019 version of the Switch.
If Mario Kart isn't your cup of tea, you can sell off the code (obviously before you use it…), and it'll most likely bring the final cost of the console to <$400, which is a great price for the v2.