We must be spoiled here in adelaide as the local bottle recyclers keep these longnecks specifically for homebrewers,and at 4 dollars a dozen they're cheap as well.
A few homebrew shops over here in WA sell refillable 660ml glass bottles, but most charge around a dollar each bottle. Untill recently they sold refillable glass bottles in Big W (at more than a dollar each), But I am uncertain if they still do.