Well I didn't pay to get the unlimited, I just got an e-mail saying "your account now has unlimited CarFax usage"....maybe it was the fact I bought 3 cars in just over a year?
If it works, I won't charge...would just have people send me the VIN and the e-mail they want the report sent to and I would take care of it
Edit: Looks like they deleted my account completely...oh well, was worth a shot