There are various packages available depending upon length of advert or number of properties. See Packages.
There is a contact form on the Property page which you can use to send a message directly to the owner or their agent.
Yes, this can be set up when you create your property page.
Whenever updates are made to a page they are reviewed manually. Until they are confirmed they will not appear on the site.
Please see the ‘Guide to add a Property‘