Dirt cheap or dear? How much cash do you need?
http://www.smh.com.au/travel/travell...0528-bojm.html

Remember when you could do "Europe on $50 a day"? It was a catchphrase that sold guidebooks en masse and became the budget guideline for many a traveller ... but that seems like a long time ago....

Lonely Planet author Sarah Wintle says it is possible to get by in Europe on $100 a day (and less in many areas) if you stay in hostels and self-cater for meals.

David Hearle, the founder of online travel guide publisher eGuide, agrees, saying he recently travelled around Italy on €100 (about $180) a day for two people.
Full story

Breakdown of their advice for Australian budget travelers:

Europe: $100/day
South-East Asia: $30-$40/day
India: $12-$15/day
N. America: $70-$100/day
Africa: $100-$300/day

Exchange rate:
$1 AUD = $0.82 USD
$1 AUD = €0.65 euro