You could argue microeconomics and supply and demand all you want, and apply it to the prices in FL. But I've bought 3 bikes so far all from FL, and sold about 2, and I have weekly subscription to Cycle Trader, and of course access to nadaguide and kbb, prices in FL are much HIGHER than those of book value and other states unlike FL or CA.
Prices in winter seem to drop a bit, but only because more people are waiting for the newer bikes, and people don't seem to ride as often at this time of the year. Come spring, people already made their decisions, and newbies or returning riders seem to want to join the big boys asap, so they go ahead and purchase the older bikes, prices go up a bit.
Now prices where there are less bikes being sold, well that just means they have less selections, haven't seen the price to be any higher than in FL.
This is of course generally speaking, and average of things, I am sure some guy in Rhode Island is thinking of selling his '88 FZR600 for $8K.