You don't suppose the heavy hand of the RIAA stuffed a few FL legislator's pockets with bundles of cash to get this plainly unconstitutional legislation rammed through do you?
What ever happened to that quaint notion of "legal tender for all debts public and private"?
[...]In Florida, the new legislation requires all stores buying second-hand merchandise for resale to apply for a permit and file security in the form of a $10,000 bond with the Department of Agriculture and Consumer Services. In addition, stores would be required to thumb-print customers selling used CDs, and acquire a copy of state-issued identity documents such as a driver's license. Furthermore, stores could issue only store credit -- not cash -- in exchange for traded CDs, and would be required to hold discs for 30 days before reselling them[...]