Hard to say without knowing your previous education and experience. Depending on your previous academic inclination you could just buy a text book and learn yourself using past exam papers and youtube. I would guess that you are more interested in the learning than the accredited course, which would suggest that you may want the interaction with a class/teacher.
If you want the exams/certificate it's worth looking at the cost of sitting the exam as an external candidate, cost of textbook and hourly rate of a tutor. At that point your local FE college may not seem that expensive.