That explains it, Ginger. "Cleaning" lots are fine for learning how to clean. They even contain nice surprises once in a while, but in general, you get what you paid for: as much detail as on the soles of a hobo's shoes. Once you have a feeling for how to clean coins, it is better to save up for coins with a bit more detail. Until that time, the coins you have cleaned can serve as perfectly good fillers once they are identified.
Peter