So how come the first paid plan on your site is $4.99 when you said $3?
Our Pro 500 plan is $19.99 per month and includes 10 Google Apps users and unlimited storage. That actually breaks down to less than $2 per user per month. Beyond that first ten, additional users are $3 per user per month. I usually just quote the $3 figure for simplicity's sake, especially since most admins using a paid Google Apps domain (Google Apps Premium) have more than 10 users anyway.