I always check http://www.ebay.com and http://www.amazon.com/

In this case, Amazon has a listing from a private dealer at

http://s1.amazon.com/exec/varzea/ts/exchange-glance/Y03Y3249569Y5869065/qid=1003487006/sr=1-1/002-4731548-1808825
for $31.14.

Good luck.
Jim Divoky