That's basically all real estate agents, and if someone selling their home to zillow only pays 10% total (since sellers typically pay agents for both sides of the transaction) that isn't a bad deal for the home seller at all.
Edit: I misremembered commission costs. 10% on the sale of a house is rather high unless the seller is covering additional costs as well.
Edit: I misremembered commission costs. 10% on the sale of a house is rather high unless the seller is covering additional costs as well.