The last time I bought concrete here in Minnesota was about two years ago and it cost me around $135 for one yard. That was for one of those you haul it type trailers of concrete. A concrete truck would probably have been around $100 a yard if I needed more.
I've heard over the last year or two that concrete is nearly impossible to get in Florida. Concrete suppliers won't even talk to you if you aren't a contractor or somebody who buys concrete all the time.
Brian Elfert