i live in haines city just outside or orlando and there are several places where you can buy lots....
River Ranch Rv resort in Lake Wales Florida
Deer Creek Rv resort in Davenport Florida
River Bend Rv resort in La Belle Florida
Citrus Highlands Rv resort in Clermont Florida
Royal RV in Clermont Florida
Center Crest in Davenport Florida
Mount Olive Shores in Polk City Florida
there are a couple of parks over in St. Cloud that sell individual lots...but i cant call their names right now....
lots at River Ranch, River Bend, Mt. Olive are in the 100's per lot...Deer Creek, Citrus Highlands, Center Crest, Royal.....likely around 50-75k per lot....
it is a start, .....good luck of course there is always the airstream park in christmas i think lots over there are for sale....