<font face="Verdana, Arial, Helvetica, sans-serif" size="2">Originally posted by BigLar:
So ... what is it, like a big lottery? Do you say "Well, I paid $900, that ought to be enough?" or what? If I book through NAEC (which I have to do if I want to fly out of YYZ - what's the matter with those people, don't they have maps?), will the agent be able to tell me? Can I request "The cheapest T-class flight near such-and-such dates?"
I.e. ... how does one go about buying (that's right - BigLar is considering buying tix 
) a desirable ticket?</font>
Well, as said earlier, you could use ITN to look at fares, find the fare class there and then book it on ba.com...
Or you could just call them and book over the phone...