Amazon offers its Prime members the Ion iPics 2 Go Photo Scanner for iPhone 4 / 4S, model no. ISC31, for $9.99 with free shipping. (Non-members must spend $35 to bag free shipping; otherwise, it adds $7.54.) That's $7 under our mention from a year ago and the lowest total price we've seen. (It's also a current low by $19.) It scans 35mm negatives, slides, and both 3x5" and 4x6" pictures to your iPhone.