Have you thought, that sometimes potential customers just afraid to make the order, because they are not really shore about final project price? How is that? Very easy. If you order some-kind software you definitely know what this application must do and it is easy enough to calculate working time. But what about design or visualizations. Customers wants something nice and beautiful. How it is possible to set term of word beautiful into boundaries: 10h is not yet beautiful and 10h and 1 minute – masterpiece? There is the border comes? How to estimate such projects?