I'm sure that you can find a dealer on the net or on Ebay who will happily sell you an unblocked overseas model scanner or receiver and ship it to you. It will clear customs and you will receive it, but then you will find out that there is almost no analog cell phone traffic any more and the cell phone companies are not required to provide analog service after next February (2008), so your $500 (+) investment won't really be that worthwhile.
Mark