[ Yellow eggshell + 5 refills ]

[ Blue eggshell + 5 refills ]

[ Red eggshell + 5 refills ]

[ Two yellow eggshells + 30 replacement cores ]

[ Two blue eggshells + 30 refills ]

[ Two red eggshells + 30 replacement cores ]

[ One blue and one yellow eggshell + 30 replacement cores ]

[ One red and one blue eggshell + 30 replacement cores ]

[ One red and one yellow eggshell + 30 replacement cores ]