Hello Liza
I feed Murray (a gold retriever) a whole chicken frame each morning and in the evening he gets 1 cup of Bonnie Lite dry food. He will get a couple of bones each week, plus sardines and eggs when I remember.
You can get large chicken frames for 50cents each sometimes, depends where you shop, and pays to shop around until you find a good supplier. Sometimes it's cheaper if you buy a lot at one time and feeze them.
Bonnie Lite dry food is available at City Farmers and costs less than $40 for 20kilos - that would last you months for a beagle size dog - especially if you feed veges, bones, frames etc as one meal and dry food as the other meal ( or mix it).
It's not the best quality dry food, but it's far from the worst and is very affordable.