said by ScrawnyB:
I don't see what paying the extra money for really affords you
Because it gives you an IP in a block not automatically banned by the rest of the world as a dynamic address. (a problem if you want to run your own mail server.) It also means some amount of downtime every time your address changes -- a) how long it takes to notice, b) how long it takes to find the new address (hard to do remotely), and then c) how long it takes to update DNS, and that change propagate.
(My office is currently behind a dynamic address. I loath the day TWC changes it and I have the week long argument with IT on the other side of the planet, just to get him to type an address into the checkpoint dashboard.)