Earlier quoted context omitted.
It is not really "open" if you have to pay, right?
You don't have to pay to use the site, apply for properties, or advertise properties - the fact that wasn't immediately clear is something we probably need to work on! We charge to advertise on external websites only (who charge us), to conduct referencing (because it costs us), and to set up tenancies (again, because it costs us) - rental transactions complete daily on our site completely for free.
Thank you for existing.
(Does it work great? Do you have a lot of paying customers?)