The following post appeared in a Trip Advisor forum:
"I will be flying in from UK to Melbourne and note there are 2 airports and with price differences.
I plan to stay in a central /CBD location.
Do I select Melbourne International (cheaper fairs [sic]) or Tullamarine (more expensive)?"
Just goes to show that a little bit of care has to be taken when doing it yourself on the internet. 'Coz "Melbourne International" is the name of an airport in Florida!