I've been on a contract since May 2000. BFD. They've always let you re-rate to a lower price if a special deal like this comes up. When was the last time your cable bill was cut in half for the same service?
I'm paying a whopping $5 more a month now for 6016/608 ($45) than I was paying for 768/128 ($40) back 2000. Beat that with or without a contract.
