So if I understand correctly it cost $1 a month as long as you register with a credit card and they waive that if you go over $30 a month?
I guess my concern is what motion is describing, once thy have my credit card info what if their system goes bonkers and start charging me up the a$$ for no apparent reason.
Of course with Murphy's law in effect the minute I get one my reason for commuting to San Diego will go away.