Glad you were able to find some that is reasonably priced.
Thank you for sharing the pics!
I give mine both oyster shell and egg shells free choice. I feed an all flock/flock raiser type feed so the calcium content is much lower than if I were to use layer feed. I do agree that the quality of the egg shells can tell you a lot, but I am in the camp that is never hurts to have a calcium supplement available whether they take it or not. For my flock at the rate they are going, a bag of OS will most likely last until next spring.