I'm sure that others know this, but Razors Direct http://www.razorsdirect.com/catalog/item/4448533/9455747.htm has them for around $21 for 100 blades. And they apparently have lots left.
Jotto says they're better than Feather, but I'd say they're quite comparable, and an outstanding value.
Jotto says they're better than Feather, but I'd say they're quite comparable, and an outstanding value.