It's free, and you only need to supply a username, password and email address.
Hey! Why do I have to join to contact you?Due to increasing amounts of automated spam being sent through the contact form, we have regretfully had to make the form available only after login. This is not the fault of anyone in The Metal Box community, and it is certainly not your fault.
Sorry for the inconvenience and thanks for taking the extra time to contact us.