I spent ages looking at online sites to find the best deal a one way train ticket for 1 Adult and 2 children to Welshpool. Cheapest I could find was £50+ and that was if I bought a family railcard.
Want down to my local train station and managed to get tickets for only £37 without needing to buy a railcard.
Just thought this was worth mentioning - as all the online train sites say that they get you the cheapest deal!