Acapella Christmas Carolers Needed

I'm looking for a group of 3-4 acapella carolers to perform at a work function in a private room at a restaurant. The carolers should be able to sing a mix of traditional and modern holiday songs. Key... (Budget: $250 - $750 AUD, Jobs: Audio Production, Audio Services, Event Planning, Music, Music Management, Music Production, Performance Management, Sound Design)