This is just a check for future travel for my uncle. He checked the price of return travel (returning a few days later) for a trip to Farnham. He ended up going form Crewkerne as it was cheaper that from Taunton, however, when I checked I looked to see what the price was if he went from taunton via Exeter (as it is would be easier and removes a walking interchange) and the ticket that was shown on NRE was cheaper even than the from Crewkerne ticket (which considering the longer distance and actually having to travel through crewkene) seemed quite strange. I can't remember the exact priings but I believe there was over £10 between the from Crewkerne fare and the from taunton via Exeter fare. What I want to know is, is this ticket actually valid and if so why the price difference?