With orders of $25 or more, Amazon offers Prime members the Gillette Men's Fusion ProShield Razor in Chill or Base for $7.97. Clip the $3 off coupon on the product page to cut that to $4.97. With free shipping, that's a buck under last month's mention and the lowest price we've seen. (It's also $6 less than what you'd pay in a local store.) It features a flexball handle and includes two razor blade refills.
Note: This item is part of Amazon's "add-on" program and can only be purchased with orders of $25 or more.