Google has ceased offering free accounts for Google Apps and now only offers its US$50 plan.
The move appears to have grown out of a desire to further support the web service for paying customers. Paying customers get 25GB storage, 24/7 phone support and a 99.97 per cent uptime guarantee — free users used to receive 10 user accounts (and before that, 50 users), and their storage mirrored what was in Gmail.
Those who already own the free account, or are a non-profit, can continue using the free option. Everyone else is either recommended to pay for the corporate version or sign up to Gmail for personal needs.