Update: Back in stock at $30 shipped.
Amazon is offering the La Crosse Technology BC-700 Alpha Power Battery Charger for only $29.19 shipped. That’s the lowest total cost we could find it for. The charger features 4 different modes: charge, discharge, refresh, and test and can charge AA and AAA rechargeable batteries simultaneously. Also, it has overheat-detection to prevent over-charging.
583 Amazon customers gave it a 5/5 star rating with positive reviews.