I see TPE have "upgraded" to the same type of booking site SWT used before they lost the franchise...ie without full webTIS functionality and more importantly without a "via" option. They have their price promise but that is only valid for TPE journeys as they know they overcharge for others. Be warned that they most definitely do not sell the cheapest tickets any more as to do that you nee the via option. I noticed last time I booked that they'd stopped selling my perfectly valid fare (via cheaper routing points) and instead were offering exactly the same trains on exactly the same route for 5 (yes 5) times the cost. Last time I book through them.