One way tickets cost more than round trip? Really?
I never fully understood this either. Something interesting though, that's not well publicized - in the past this hasn't applied to student fares, which are available via specialist agencies like STA. These are able to be split, so a one-way fare costs exactly half of a round-trip. I discovered this back in 2004 when I came over on a 1-way ticket from Omaha for $220.
I had a discussion with the agent about why this was, and it had something to do with airlines trying to balance volume with normal fares, but student fares being leftover seats that they were just looking to fill.
Note that this was seven years ago! Still, it's worth looking into if you (or anyone reading this thread) qualify for student fares.