I still remember those knives that appeared (or still are appearing) on shippingonly.com site. Well, it would seem that this guy has 250 Police Tactical knife on ebay for $1 plus $3.50 shipping for the first knife. Bid on more and each additional knife incurs an additional $1.00 shipping.

http://cgi.ebay.com/aw-cgi/eBayISAPI...tem=1129059106