(11 Mar 2014, 10:42 am)tyresmoke wrote What's the point of advertising those if they don't say what they are?!
It is very similar to an airline selling a cheap ticket - but not telling you the limitations to that ticket or the fact it goes every second Tuesday from Bristol at 25past 4 in the morning.
The advertisement stirs interest and the passenger decides to use the service, thinking the price is correct for the journey they specifically want to make.