<apex:pageBlockTable value="{!availableServices}" var="s" rendered="{!availableServices.size > 0}">
            <apex:column width="25">
                <apex:inputCheckbox value="{!s.selected}" rendered="{!IF(s.alreadyCreated,false,true)}"/>
            </apex:column>
            <apex:column title="Service Name" headerValue="Service Name">
                {!s.service.Name}
            </apex:column>
            <apex:column title="Service Family" headerValue="Service Family">
                {!s.service.Family}
            </apex:column>
        </apex:pageBlockTable>