BidAllies via eBay offers the refurbished Unlocked Apple iPhone 4S 16GB GSM Smartphone in Black for $87.95 with free shipping. That's $7 under our mention from last month and the lowest total price we've seen for an iPhone 4S 16GB Phone in any condition. (It's a current low by $2.) It's compatible with GSM networks such as AT&T, T-Mobile.

Note: No warranty information is provided.