So two other friends and I are a very small game dev studio. So far we haven't released a game but we have 2 games almost ready to launch. A bigger studio saw our work and now they want to work with us; they need people to develop mobile games for them (iOS, Android).
They want us to set the price for the projects (can't tell the specifics we signed a NDA). They will give us all the assets (graphics/sound) so we only have to code. And because they only work with Unity3D we have to learn it.
How do we decide how much to charge for the projects?