The world’s biggest online holiday house rental brand, HomeAway, has bought Realholidays.com.au from the REA Group, which also runs Realestate.com.au. Realholidays.com.au’s 21,000 listings will be folded into HomeAway.com.au and the business managed by James Cassidy. So what has HomeAway bought? Just the listings, really, and relationships with local real estate agents. Realholidays.com.au has had no impetus for at least a year and REA didn’t consider the deal worthy of an announcement to the Australian Stock Exchange. Fairfax Digital, owner of market leader stayz.com.au, recently bought Occupancy.com for A$29m.