I have return train tickets from Dundee to London for the 9/3/12 to 12/3/12.
Tickets:
Depart from Dundee 9th at 13.30 to London Kings Cross
Depart from London on the 12th at 15.00 to Dundee station
The current prices for these tickets at these times are; going, £125.50; coming back, £88.50. The cheapest on these days are £64.00 each way, this makes a saving of £38.00 - £124.00