What is it worth
A number on the screen, not "an agent will be in touch".
Every other valuation form on the internet takes your address and gives you a phone call. Put yours in and you will get the automated estimate, a range from what has actually closed near you, and a straight note about what neither of those knows.
What you will get
Three numbers, and what is wrong with each
Rather than one number pretending to be certain.
An estimate, not an appraisal. Automated valuations come from Melissa Data and are built from public records. Sale ranges come from Florida Gulf Coast MLS. Information is deemed reliable but is not guaranteed accurate by the MLS. Nothing here is an appraisal and none of it should be relied on as one.