The traditional delivery model would include QlikView Server (Application Server), and some form of client license (Sesssion, Named, Document).
Alternatively you could use a product like QlikView Publisher to control the document reload process and distribute copies of the application via e-mail the your user base. Publisher can also control the reduction of data, so users only have access to the data they are allowed to see.
Your best bet for understanding the pricing structure is contact Qliktech or a register partner.
Section Access can provide a way of limiting users to data within a single document. There are several quality threads about this topic in the community.
Hope this helps,