I have searched a lot but i cannot find how much food does cost in The Stannary. I am planning to eat in campus so i will find very useful any info about that.
It really depends on what you want to get, for the cooked meal it is around £3.75 and drinks are the normal sort of prices. So really for lunch at the Stannary you'd be looking at a fiver for a decent meal.
If you are living in Glasney Parc the academic buildings are no more than 5 minutes from the flats so you would probably be better off just cooking yourself some cheese on toast, toast, toastie or something along those lines!
Just to make sure you're aware, they don't serve meals in the evenings - only up until 2pm.