beef jerky is cheaper if you make it at home. eighteen oz (510 g) of beef jerky made at home costs 5.28$ less than if you would buy 18 oz (510 g) pack in a store. if you consume 18 oz (510 g) of beef jerky per week, you can save 21$ per month and 253$ per year if you make it at home instead of buying it in a store.