Looking for facts about living in Hawaii...?

My brother and his family moved to Maui in 2004. He had a pool cleaning service here in So Cal. Sold his house and business and moved. He said it was the best thing he ever did. He started up another pool cleaning service and used the money he made on his house in Cal. to put down on Maui. One thing both people need to work. Houses are not cheap..he payed 660000.00 for a 3 bedroom