Not a snowbird, but know several at my RV park, who live up here (Canada) in summer and go south (Texas, Mexico, etc.) in winter. If you're okay with living in a trailer, or a park-model home (about 500 sq. ft. with all the bells and whistles) it's certainly cheap enough. My place comes with a lake and beach and costs $3500 to $4500 a year, depending on the lot you choose, with water and electricity included. If you had one such place in each location, you could live pretty well for $25000 a year.