Here's another place to buy it - verified the specifications on my PE adaptor:
DVE Switching Adapter
Model DSA-12G-12FUS 120120
Input 100-240V ~ 50/60 Hz 0.3Amp
Output +12V ---1A
Level 3
Positive on the inside, negative on the outside shaft
Sold here for $9.50
http://www.dynamictradingco.net/DSA_...dsa-12g-12.htm