In terms of actual hands-on support, there are no hidden costs.  So there are no call-out fee’s, minimum charges or admin costs etc.  Obviously there may be other costs such as Microsoft licensing for example.  These are all optional though and you can source your own software and hardware if you wish.  Many customers source everything through us but this is because we are often cheaper than the normal market price so just makes sense.  There is no pressure either way though.