An annual season ticket from Pevensey to Pevensey Bay is currently £168.
Ryde Esplanade to St Johns Road used to be the cheapest, but is now £180.
Now that the Gold Card area has been extended into the West Midlands, there are cheaper ones. Lichfield City to Lichfield Trent Valley is £164. But that has now been undercut by Hatton to Lapworth in Warwickshire, at £160.