Following the 7 O'Clock Black deal thread, the same vendor has Gillette Silver Blues for $19.99 for a 100 pack.
Use coupon code THANKS to get 5% off knocking it down to $18.99. Shipping is free.
Just got 200...too bad I already have another 100 on their way from DrIdiot.
Here's the 7 O'Clock Black thread. I got in on those as well and they arrived without a problem.