$15-$25 depending on who it is. DD will be attending a party on halloween for the younger sister of one of her friends. They are all in the same multi-level girlscout troop. DD is a jr, the birthday girl is a daisy. For her I spent 15. For DD's friends who are also the children of good friends I spend more in the 22-25 range except for last week. things are a little tight this month (due to car repairs) and the brother/sister had their party together. I spent about 18 each, but would have normally spent closer to $25 for each of them. Last month DD was invited to a friends party, and she too was having it with her brother (it was actually the brother Bday, but the mom is PG and due the same week as the girls BD, which is very soon). We barely know the brother, so I only spent 8 on him, and about 17 on her.