I say good sellers are consistent and should never drop the ball!! I understand there are unforeseen situations that may cause an issue here and there but that 's the only time there should be a problem...There has been talk of it on other threads, such as:
As far as I know there isn't a compiled list. Even more confusing are the sellers who build up an excellent reputation, but then drop the ball for a period of time, then seem to recover. Do you rate them upon a bad 3 month period (racing season) or their annual average?