Voice lessons

A friend of mine is considering moving to berlin and is curious how much voice lessons cost here.
She's had tones of training and is considering going into an Opera training program when she gets home so she needs someone with good qualifications.
Does anyone have any idea how much money shes going to have to spend?

i know a voice teacher based out of berlin and she charges 40€ for a 45 minute lesson, but i also know someone who paid his voice teacher in stuttgart 70€ for a 45 minute lesson.

Most professional opera teachers in Berlin charge 50 euros per hour, plus extra if you want an accompanist. There are some who charge more, but that's not the norm. Most of the coaches charge 30 per hour. If she needs recommendations for teachers, coaches or accompanists, I suggest she checks out the New Forum for Classical Singers, http://www.nfcs.net and goes to the Europe Forum there.