Some background: there is a "rental crisis" in Australia, attributed to an economic boom which means:
- young people with skills in high demand are cashed up and moving out of home earlier
- there's a load of skilled and semi-skilled migrants coming into the country
The media will commonly run stories about 30 potential tenants turning up to inspections. This is the extreme - some locations/price ranges are not suffering high demand, and most properties fall somewhere in between.