How much does it cost to design and design a site like tumblr?

Question

Project management

The customer counted 6 layouts, but perhaps he did not take into account something. I understand that each designer evaluates his work in his own way, but maybe someone experienced will share his "recipe" on how he calculates the cost of the project.

Answer 1

Amount of time (eg 16 hours) * rate (eg $20 per hour) * risk factor (usually 1.5-2).