Is what this headline should read. Lifetime plans are a notoriously bad and often disingenuous idea.
This is essentially a free plan they are trying to charge $25 for. Buyer beware.
What if they remove a feature you depend on 3 years from now? Do you get your money back? What if Basecamp Next++ due in 2015 is terrible and you have to stop using it, can you still use what you are paying for now? What if 37 signals discontinues Basecamp 15 years from now?