Update: Deal over.

Bell Catalyst U-Locks for Bicycles – Link

Amazon has this currently marked down to just $5!

• A must on campuses and in high-crime areas
• 8 inch hardened steel shackle and crossbar for Tough Security
• Carrying Bracket with Quick release guarantees ease of Transportation
• Vinyl crossbar and shackle coating Protects bike from scratches
• 500 anti-theft Protection and 2 keys included