said by xmd:The Static IP address issue is not as simple as you make it seem. Let's say you want to run two or three different servers - often, you simply can't do that from a single IP address, no matter how fancy you make your NAT / router configuration. Unfortunately, their price for static IPs is simply highway robbery: $25/month for 1 static IP, $35/month for 5 static IPs. Ouch.
I've set up all sorts of things for small businesses, and found the need for using more than one public IP extremely rare. You may just need a smarter router (linux box or PFSense) in-line to route the requests to where you want them.
When I had secondary IPs available I think the only use I found for them was to set up a "back door" access port just incase I was working on the firewall/routing rules remotely and locked myself out.