Golden Chicken

The Golden Chicken is a purchasable item in Shell Shockers, for $9.99. Buying it grants the user more eggshell Colors, double the Golden Eggs per kill (10 to 20), a golden name appearing on the server leaderboard, and no advertisements for 30 days.

To be worth the ten dollars, besides the skins, leaderboard perks, and advertisements, the user would need to get 650 kills, which would grant 6500 extra golden eggs. This is not too hard to do if the user has enough time (~21.67 kills a day).