What's a reasonable budget to serve an appetizer and dinner to a crowd of 40 people?

$800 gets you 40 @ $20 a head....so i would say anywhere from $1000 to $1500 ....it also depends on where you are talking about having this served...is there a group discount? is there a discount for ordering one specific thing? what are the needs of your guests? are they vegetarian? allergic to anything? are drinks included? any alcohol involved?