If you are looking to own Hawaii real estate, check out http://www.mauirealestate.net/. This site will help you find residential homes or vacant lands or condominiums. They will even help you find for a commercial properties if are also interested. And if you only intend to stay there for a short vacation, the site has some lists of nice and beautiful villas where you will be comfortable to stay.
To lessen the hassle, you can make a quick search at their site by filling up the blank form and once you are done, you can easily get the result. By doing this, at least you will have an idea how much will you be spending and what services will be provided to you.