Outward 5th April : Off Peak Single (
Online Only) £30.05
Carlisle dep 1607 > arr Wolverhampton 1831 dep 1843 > arr 2047 Machynlleth dep 2120 Tywyn 2149
Return 9th April : Advance Single £7.60 Virgin West Coast + Connections
Tywyn dep 1526 > arr Machynlleth 1555 dep 1609 > Wolverhampton arr 1809 dep 1839 arr Carlisle 2100
total cost £37.65
Passengers who are unable to buy a Virgin Advance ticket for both the outward and return legs of their journey, or unable to specify an exact train for one leg of a return journey, are able to mix and match ticket types and buy an Off-Peak Single (web only) on Virgin Trains routes (at half the price of an Off-Peak Return) for either the outward or return leg of the journey. This money-saving facility is available for website and call centre bookings only.
So therefore this will be your cheapest Option, as there are No advance available on your outward journey, it is giving you this option and explain's above. You will need to either use Virgin's Call Centre or
Virgin's Website to get this ticket.