I sent in a pack of 100 notes to be graded, sequential order.  The notes came back with 4 different grades, all high 60s.  I think they do a great job and the notes are competitive with any other services out there.  Also, they were extremely fast to get my notes returned to me.  It did take a few months before they had an opening for me to become a member, but it was well worth the wait.  I truly think this is the best value for a grading service.