Cheapest it's ever been on Amazon. Last lowest price was $494.10
Not a bad price if you like the look of the console. Assuming you can get a normal switch for ~$350, and the game itself at around $60-70, you're essentially paying ~$30 extra for the limited edition console.
Don't forgot to use Cashrewards/Shopback.
Just a note that this comes with a download of super smash rather than a physical copy.