The supplied purchase panel shows 1 egg for 80 Robux, 3 for 200, 10 for 640 and 50 for 2,800. Check the price in-game before buying. The countdown belongs to the captured screen; no calendar end date is inferred from it.
The six pet chances shown total 99%. They are reproduced as displayed, without adjusting or normalizing them. Zombified is shown separately at 1%; it is not a seventh pet. The panel does not explain how the pet roll and mutation roll interact, so no combined probability or guaranteed result is claimed.
Zombified · 1%
Zombified is the zombification mutation available through the 1% chance shown on this Halloween Egg. A pet can come with this mutation. The 1% is a chance, not an income multiplier; its income multiplier has not been provided.

Halloween Egg · Robux →