To be able to choose between proprietary software packages is to be able to choose your master. Freedom means not having a master. And in the area of computing, freedom means not using proprietary software. - Richard M. Stallman

Before you pay the big bucks to custom develop a software solution for your Joomla web site, have you looked at all the Joomla extensions that are available? Many are free (just costing the time to install and configure).