[oscardelben]

It took him 2 months but we don't know how many hours per day. Also this was the first book he wrote, maybe with the next one he'll make 6000 in one week. You can't expect to win big the first time.

[GFischer]

If it's a good book, maybe he can revise and update it, add more chapters, and make a 2nd edition (with a new marketing campaign behind it).