That's easy: 8-10€ per day for the Albergue, ~8-10€ for the pilgrims menue, 1-3€ for breakfast or some fruits (bananas, apples) from a discounter. My part for the shared meals: 3€ + work (I do cook a lot at home). Some days (3) only breakfast, nothing more. Water for free. I've lost 7kg weight on my CF and it felt very comfortable.
In the Donativos / Municipals it was 5€ for the night, they weren't well maintained or very "rural" nor did anyone show up after the check-in. In Grañon I gave 12€.
In total there were a few days with expenses higher than 25€ but most were ~20€.
My goal was not to spend more than 20€ per day, but I missed it.
As far as I'm informed, the Galician Municipals are now 10-12€ per night and most private Albergues are 12-15€. Not a chance for a super-cheapo-CF anymore
but worth every Penny!
BC
Roland