inkcredibleprinting via eBay offers this USB iPhone / iPod Data Sync Cable 6-Pack, model no. apkit33, for $4.25 with free shipping ($0.71/cable). That's tied with our mention from last week as the lowest total price we could find for this quantity by $4, although we saw similar cables for $0.33 per unit last month. They're compatible with most Apple products with a 30-pin connector.