If you need cheaper content due to severe budget contraints, you can always checkout a few of the content mills available. Textbroker may be the least expensive of all of these. Although, I have heard you can get articles written for a fraction of a cent on Upwork. Keep in mind that I am only listing these sites for your reference. I'm not providing any pros, cons, reviews or recommendations for any of them. You'll have to check them out yourself.