I tried selling my boat on Craigslist and other free sites the end of last season and showed the boat a couple time but no sale. BFSBO told me to increase my price significantly when I advertised with them because I had it priced too low. I was really sceptical but agreed to try it.
The boat sold at the new higher price in 2 months mid winter and I got to keep an extra thousand dollars after paying the price of advertising on BFSBO! I'm a believer!