A few days before my Amtrak ride from New York to Boston, I got an email from Amtrak asking if I'd like to bid on an "enhanced experience" using the BidUp process.
I was able to bid a minimum of $95 to get from business class to first class, which comes with complimentary meals, beverages, and large, reserved seats.
My original business-class ticket was $57. Even after a $95 bid, I'd still only be paying half price for a first-class ticket, which usually costs about $300.
So, I placed the minimum bid and waited.