SDSL An alternative to Cisco that would allow you to regulate and measure bandwidth is with a Redback router and your standard PPP type sessions through a Radius server. Redback has a lot of features you haven't even thought of yet. I'd really recommend you call them. Check out their web site. I was thinking about the Cisco 7000 series.
Price is an issue.
After getting the equipment I would also like to regulate and measure bandwidth used on a per person basis. I'd need to compete with this. Thanks in advance for any help.