I tried asking Lisa:
'You asked:
What is the price of a Standard Off-Peak Return from London King's Cross to Peterborough?
Lisa says:
To find out the cost of a ticket, simply enter your journey details into our Journey Planner
We display fares on our website in three categories – Anytime, Off-Peak and Advance.
Anytime - These tickets have no time restrictions on when you can travel.
Off-Peak - These tickets may have restrictions on the times that you can travel. These depend on the specific journey that you are making, but generally apply during the early morning (before 09.30, Monday to Friday), early evening for travel from major cities including London (15.30 to 19.15) or on certain days of the week.
Advance - Tickets must be purchased in advance of travel. They are sold in limited numbers and so are subject to availability. Book as far in advance as possible to get the cheapest fares. You must travel on the train shown on your ticket or reservation confirmation.
If you want, I can ask you a few questions to help you find train times, ticket options and fares for your journey - you'll even have the option to buy your tickets online right now.
Say 'Yes' if you want my help, or say 'No' and I'll load the Journey Planner which will let you plan your own journey'
For goodness' sake!