If you want to save money on a separate skin exfoliating product, a face cloth with a coarse texture will do the job. I use one several times a week, and it keeps my skin looking bright and polished.
All you have to do to exfoliate your skin with a coarse face cloth is use it when you wash your face with your favorite facial soap or facial cleanser. For extra exfoliating power, you can even use the cloth when it is dry, though you have to be careful not to rub in on your face too firmly. If you do, you could cause skin irritation.