In the end, by keeping a very close eye on internet airfares I got ridiculously cheap fares. My two main airfares cost me US$118 from ireland to NYC and then US$360 from NYC to Lima!
My next flight is costing me US$1300 from Rio de J. to Auckland. That´s a bit of a killer.
to who is on a RTW ticket seems pretty happy with it. ç
Hope that helps!
Please please tell what company you obtained these insane fares from!