Some Hosts listed on the site long before the latest booking system was implemented.
Digs without prices or rooms cannot be booked by Guests and so if they are selected from the search results, the Guest is returned to the Homepage with a message saying "The Host has not provided any prices for these digs. We have alerted them that there is interest in making a booking."
There are only a few Hosts who haven't yet completed their listing so this should be a rare occurrence.
Thank you for your understanding.