Joomla Community Builder Customisation

One of our client's already has a Joomla website and requires an upgrade to a include a members profile section. We have decided to use Community Builder as a basis for the profiles, but the client requires specific 'advanced search' functionality. They require the search fields to dynamically display the number of profiles within a specific field and hide non populated ones. e.g If the user searches using the field 'Country' it would show 'United Kingdom (50)'. I would require someone to either customise a module/component that already exists for Community Builder to accommodate this, or write one from scratch. I can give a more in depth explanation if required, but in the first instance, a rough ball-park cost for this kind of development work would suffice.