Horror fiction novelist Stephen King can boast to having one of the priciest homes on all of Florida's west coast. King's Sarasota, Florida home which he purchased in April of 2001, is currently valued at an eye-popping $10 Million. Located on Casey Key, this home offers three bedrooms, four bathrooms, a swimming pool, and 6,817 square feet. Casey Key Facts Casey Key is a barrier island that is 8 miles long and 300 yards wide. There are approximately 600 residents on Casey Key. Casey is located about 60 miles south of Tampa, Florida.