On the subject of content management scripts, imho you really are much better off having one custom designed for your own needs rather than purchasing one of the off-the-shelf solutions that are out there right now, for starters, its going to be a lot cheaper for you than you would think, ours cost around $2500 right now, thats with a bunch of feature additions that i never thought to include on the first version.

Also, what about scripts such as StrongBox or PennyWize, is it worth having those installed on each paysite?

Regards,

Lee