Depends on the sales volume. Most of the brokers previously listed won't touch anything less than a half million in sales price. For a fist cut at sales price, take about 1.4 x annual sales volume. If you're below that, you probably won't get a big-time broker interested. I'd first advertise on the site itself, as your existing clients may prove to provide some of your best leads for buying your site. If you do use a broker, expect to pay a hefty percentage for their services.