French Language Classes for Adults (Montpellier)

I will be moving to Montpellier later in the year and have been checking the prices of French language classes.
I found that Montpellier International Language Institute charges approximately EUR200 per week for their intensive classes (5 mornings per week).
As I will be living in the central area, this institute would be very conveniently located for me but because the price is so high, I'm wondering whether anyone could recommend an alternative?