Instagram cost per user chart compared to other big acquisitions

Following the huge amount of the Instagram acquisition by Facebook, a lot of people are commenting the craziness of the deal. But if we compare the cost per user of Instagram to acquistions like Skype, Zappos, Mapquest, etc… It seems pretty reasonnable… But obviously with 13 employee the cost per employee is skyrocketing as you can see on the 2nd chart below.

Instagram cost per user chart


Instagram cost per employee chart