Very annoying this - waiting ages while all the stupid mugs to pay up for high fares tickets, before some bod or the computer realises that it needs to let the bargain hunters get their pound of flesh.
I've got data from the last few years saying how low fares for particular routes on certain dates are likely to fall - just haven't got the data saying how long in advance the fares hit rock bottom.
Guess I'll have to write one of those automated evil screenscrapers instead !