Searching for Huddersfield-Manchester fares for travelling this Thursday, leaving Huddersfield early morning and returning after 1525, I noticed that it varied from journey to journey whether the cheapest flexible return fare offered was an Anytime Day Return at £21.80 or an Anytime Short Distance Return at £27.40. It did not seem to depend upon the Manchester arrival station as some journeys with the higher fare were to Victoria as well as to Piccadilly and, in any event, both fares are valid to the range of Manchester Stations.
What does seem to be the driver is that those with the lower fare availability have RRBs going to Brighouse. (The Anytime Day Return fare has a 'valid only for trains via or passing through Hebden Bridge' restriction) whereas the higher fare journeys have RRBs going to Stalybridge.
Whilst it is course entirely usual in normal times to have cheaper fares limited to specific routes, during extended disruption such as this where it depends entirely upon RRB arrangements which route a passenger may be taken, it does not seem reasonable for there to be such unpredictability of fare (especially when the higher fare is for a longer RRB element of the journey), and I can see some passengers being caught out.
What does seem to be the driver is that those with the lower fare availability have RRBs going to Brighouse. (The Anytime Day Return fare has a 'valid only for trains via or passing through Hebden Bridge' restriction) whereas the higher fare journeys have RRBs going to Stalybridge.
Whilst it is course entirely usual in normal times to have cheaper fares limited to specific routes, during extended disruption such as this where it depends entirely upon RRB arrangements which route a passenger may be taken, it does not seem reasonable for there to be such unpredictability of fare (especially when the higher fare is for a longer RRB element of the journey), and I can see some passengers being caught out.