Another way to find Z fares is to look at sites like www.travelselect.com and http://www.airnet.co.uk/ (second site is for flights of UK origin only).

These tend to be where I buy Z fares from (normally available for about £2100 - or $3500 a person). But I orginate from the UK, so that may make a difference.

The other place to look is adverts in the travel sections of your big newspapers - they tend to list flight consolidators who have access to good Z fares...

Boo