The Back-to-School ads are everywhere. It's time to get supplies. Realtor Tim Van Horn has a supply list for all homeowners (and maybe a little extra credit!). When it comes to the question of "How much is my home worth?" there are a lot of algorithms out there, trying to give you a definitive value. Tim explains just how good those guesstimates are. For more great real estate info, check out timvanhorn.com.