How is there so much abundance in free countries at such low cost? See www.fee.org for that Foundation's clear and complete explanation. Read the short essay, I, Pencil, for a quick lesson in how the free market works.
Economics in One Lesson by Henry Hazlitt, even though written originally in 1946, is still about as good a publication as you can get on the subject.
And for current information see www.aier.org.