Amtrak is unfathomable.
I just check what it would be to travel from Atlanta to Portland and back.
A minimum of a seven days on the train and would cost over $700.00 for a coach seat.

If I wished to lay down during the trip (sleeper seat) the price jumps to $1,300.00 ish.
And for a sleeping room the price is $5,000.00 ish.