a couple of tours, Keys to the Kingdom and Family Magic Tour. Both were well worth it but I doubt the second is anything you would be interested in. Most of the tours are worth the time and money if it is an area you're interested in.
Here are a couple of links that might help. The first has a general description of the tour and the second has some reviews of the tours. The number of reviews varies widely.
http://allears.net/btp/tours.htm
http://land.allears.net/reviewpost/showcat.php?cat=66
Are you looking to send your husband by himself or are you going with him? Will you be bringing the kids on the tour as well? I'm asking because some tours have age limits.