The National Association of REALTORS® (N.A.R.) in the U.S. has conducted an extensive study of home sales in 2015. They found that only 8% of sales were conducted as ‘private sales’, where no agents were involved, so roughly 1 in 12.
They have found that, although its possible to sell privately, there are 3 main drawbacks, statistically: Private sellers get less money, take longer to sell, and experience more STRESS than their represented counterparts. Here is the infographic that came from this study, created by Brent & Katie Carnduff (The Carnduff Team) of Keller Williams of Southern Nevada.