I'll have to check for sure, but I think it's about a stack of zombie, half stack of skeleton, and 7 creeper.
In future, could you please post this thread here: http://empireminecraft.com/forums/products-businesses-services.39/ This section of the forums is supposed to be for discussion of prices of items rather than a place to sell items: http://empireminecraft.com/threads/please-read-using-the-marketplace-discussion.27300/