AT&T is now offering refurbished iPhone 3GS units for $9. According to the carrier’s website, the 8 GB refurbished units require a two-year contract and new activation, and include a limited warranty of at least 90 days. It is not clear whether the lowered pricing represents a permanent change or is part of a short-term promotion; the iPhone 3GS is expected to be replaced and/or further lowered in price when Apple introduces its next-generation…
