FWIW, the prices for super radars, binary's etc have significantly come down (30 to 40%). A lot of these seem to be surfacing for sale in large quantities. Not sure if it's because the 2009's are starting to come or just a large collection being sold.
Error notes however are still maintaining their prices. Please be careful in this arena as there are plenty of home made varieties just like the fake coins. If you decide to get in here buy a graded certified note. Apparently you can create an error easily with the current available technology (specially ink type error's).
Peace