From the interview he linked to: "Here’s the data that I do have: as of today (April 12, 2009) I have sold to 3798 customers for a total of $469,048 in sales. Sales keep growing steadily: the last 7 weeks have all been over $20,000, with a record $35k week for the first week of April. We are averaging around 200 new customers per week right now"