I’ve just been on Amtrak’s website to see how much it would cost for a single day, round trip adult ticket from Metro Park, NJ (MET) to Union Station (WAS) on September 12, 2009. When I do this, the total cost is $224.00. Note that this is for the 121 Train departing at 6:20 AM and the 182 Train leaving DC at 7:20 PM. When I enter the same itinerary for one week later, September 19, 2009 and select the same trains the total round trip cost is $98.00. The dramatic price difference confuses me and I can’t explain why...