hi everyone

my brother would like to come visit me in SYD and he lives in YYZ.

he is extremely flexible about dates (anytime after june) and duration of stay (but can stay for up to a month - that's when i finally throw him out!).

any suggestions on best agent/place-on-the-web to purchase such a fare on? he's going to use his money from his summer job to get there, so money is quite tight.