You might want to consider lowering the price to attract customers. They usually go around for 500-1000r
Usually I hate when people post what I'm about to say, but... You may want to lower your price. Zombies are the easiest to obtain, then skeletons, and then creepers, I'd say max 400r. If you still want to sell at 10k, feel free to. :
hehe i already thought it was worth way less.. but a friend told me they were around 10k :S very well.. anyone want to come pick it up for 1k feel free to visit me 6009