My local fitness place had a deal where for $5 a month they'd put your membership 'on hold'. What a deal! I discovered by erasing my credit card on their payment site I could do it for $0 a month.
Just be careful that they don't take you to collections for "missed payments". Regardless though, fuck these kinds of practices where signing up is easy and leaving is hard. That should be something massively illegal with fines in the millions to billions for the number of affected customers.