IP Surveillance made simple with NETGEAR

I can't seem to find pricing or details such as how much is a 16 camera license. What exactly is included. Is this just software or is it a complete system minus cameras. What hardware do I need. can you connect multiple system together. Does it have any memory? What functions can it do? I see some literature that shows a tower and some that shows a PoE Switch. I see literature that talks about how much memory it takes to operate 30 high res cameras is the system include adequate memory or do I supply it myself. I am trying to put together pricing for about 30 cameras But it needs to be expandable to at least twice that maybe more. I have to put together pricing for a complete package i want to use an IP based system. But I don't know exactly what the Netgear ReadyNAS is nor can I find anybody that can tell me if this is a solution to my problem or is it just a small part of the solution or no solution at all.