Zone 6 boundary to Aylesbury Vale

[deltic]

I have a TfL Oyster 60+ card and was looking at travelling from London Marylebone to Aylesbury Vale. The Rail Forum ticketing sites offers an off-peak day return Zone 6 Boundary ticket for £19.40. However an Amersham (where the Oyster 60+ card is valid to) to Aylesbury Vale Off-peak day return is £15. Any idea why the discrepancy or am I missing something?

 

[microrich]

I have a TfL Oyster 60+ card and was looking at travelling from London Marylebone to Aylesbury Vale. The Rail Forum ticketing sites offers an off-peak day return Zone 6 Boundary ticket for £19.40. However an Amersham (where the Oyster 60+ card is valid to) to Aylesbury Vale Off-peak day return is £15. Any idea why the discrepancy or am I missing something?

This is presumably a consequence of the 60+ oyster card area extending quite a long way out of Zone 6 in some cases. Specifically here, Amersham is in Zone 9 but also in the 60+ oyster area. So you only need a ticket from Amersham rather than Moor Park (which is at the boundary of Zone 6).

Seems rather like the forums ticketing site is not offering the cheapest option when the user selects they have a 60+ oyster in the advanced options. Perhaps worth asking them to take a look - they seem quite good at fixing issues like this when they are made aware.