On a budget yes, on the "Cheap no.gwuMACaddict said:'best cheap eats' issue every year.
I know more than my fair share of places to get a great feed for under $10AUD, though most of them I wouldn't take a perspective girlfriend for a date. let alone a first date.
I'd budget close to $75US, if you get any change, treat yourself to a beer.
Cheers
Jordan