With American Flyers, you don't actually have to get anything notarized, or mail any paperwork, the whole application can be done online once the FIRC is completed. Then you print out and sign your temporary airmen certificate, and wait for the plastic one to arrive in the mail.
This service has only been available for the last year or so, as last time I renewed, it was the old way with a notary and mailing paperwork, but this time (a month ago) it was entirely online. So AceCFI may be cheap, but I think all the other providers will offer an entirely online process soon, so stay where you are before you go paying them $60.