Amazon offers the Gillette Fusion Manual Men's Razor Blade Refill 12-Pack for $23.61. Clip the 25% off coupon on the product page to cut it to $17.71. With free shipping for Prime members, that's $3 under our mention from two weeks ago and the lowest price we've seen. (It's also about $12 under the price you'd expect to pay at your local store.) They're compatible with Fusion5 and Fusion5 Power razors.