I had the same experience as Melissa (Lesson Learned.... Beware). I signed up 3 Nov for what I thought was a monthly subscription. Today, after a 20 minute wait for customer service to answer, I was also told that it would cost me $50 to cancel - it was in the information I was presented at the time I signed up. ( I have just reviewed all the sign-up information I could find and don't see anything about $50 to cancel. Neither is there anything to indicate that a monthly subscription cannot be cancelled - except for one * that says "These plans represent an annual commitment with payments in monthly installments.") She also said that the only true monthly service was only available by phone request. Sure didn't find anything about that on their site either.
I am sure that what Ancestry.com is doing is pefectly legal, and that it is going to cost me $100 for half a dozen fruitless searches of the census index. It surely isn't right though for them to obscure the true nature of a "monthly" subscription. Ken Walker