Union membership costs around 0.0075 % of monthly salary for a full-time member of staff. 

But the real question is:

Can you afford NOT to be a member? NOT to have a say in the way your Department and, indeed, how the institution is run? NOT to have access to expert advice, up-to-date information and guidance? NOT to have access to representation, including grievance representation, if things do go wrong?

WIGUT can help you only if you are a member.