I cant speak for how it is but do you need all of that space? Remember, a reseller plan means that you can have as many domains as will fit in the space you have. If each one of those runs a database and a script or two, could you imagine the server load if it were full of little domains executing those scripts all the time? I imagine none of my sites would perform properly.
Remember, things are the way they are for a reason. This is budget hosting so Bill isnt holding out for more money.