Here are some of the answers that you have been looking for-:
1. The average cost of living,food,sightseeing etc is arnd 2000 euros.
2. The accommodation is in an apartment.It is your choice whether u want share it with 2 guys or 1 guy or whether u want to live alone.You will hav to pay accordingly and your expenses will also rise according to that.
3. CAE doesnt provide any pick/drop service.But most of the times, the instructors pick/drop u.But it varies with the instructor.
4. On an average,in CAE Madrid,it takes arnd 2 mnths 10 days for the whole course.