Finetech007 via eBay offers the Aluminum Mini Briefcase Business Card Holder for $2.87 with free shipping. That's a buck under our mention from September and the lowest total price we've seen. (Outside of other eBay sellers, it's a current low by $2.) The holder resembles a mini Zero Halliburton attache case and can carry about 30 cards.

Note: Expect two to seven weeks for delivery.