If your interested in using a travelex cash card, check out COMMONWEALTH and ANZ banks... They too offer a travel card that works the same as the travelex one.
(Prepaid Visa or Prepaid Mastercard )
We found the ANZ one to have less fees.
My tip would be to research... Check out the Product Disclosure Statement (PDS) for each ANZ, COMMONWEALTH and TRAVELEX and weigh up the fees before you choose.
You can read the PDS on their websites - or get a brochure PDS by visiting any branch or travelex counter.
NAB offer one too, but its provided by travelex, so i cant imagine their fees would be any different than using Travelex..
Hope this helps.