You have to strike quickly when they're available (a la Busse), but they can be had for a mild to moderate markup here on the exchange. Sometimes a better option, if you don't have a lot of time to stand by on the computer and wait for them to go on sale at SYKW. As Vox stated, become a regular on their forums. Dan will give advanced notice to the Junk Yard Dogs over there when a new release is pending.