Florida is a lousy shipping point for out of state deliveries, which you might need. Especially the southern cities like Miami.
Even if it wasn't a penninsula, Florida is still in the corner of the country. In terms of shipping...Florida is a dead-end. Trucks can't easily 'piggy-back' loads, or make extra drops along the way, and this raises shipping costs considerably.
Florida is also really a long state, it's 400 miles from Jacksonville to Miami.(400 more on way back).
Jacksonville is the only major Florida city with an easy route to the north, and that still isn't pretty. Jacksonville isn't "on the way" to anywhere other that another Florida city.
Atlanta will be the closest city with a major used retail shelving market.
There is another factor which increases the price of used shelving in Florida, the climate.
Florida is more humid than most U.S.A. climates, and can expect to see slightly more warped and rusted shelving on the market.
