Amazon has a $10 off $59 on Gillette, Old Spice, and Zest products until the end of the month (for Father's Day, meh).
This results in some darn good prices on razor cartridges, though their website organization leaves something to be desired right now (hunting down exactly which items are eligible for the discount is a bit tedious. More details where I originally found out about it at Slickdeals.
Also, I've just put in an order for 6 8-packs of Mach 3 Turbos. If anybody wants any, I'd be happy to reduce my longterm investment and share them for, say, $10/8 (or $5/4, as the 8-packs are usually two 4 ct. things sealed together in one blister). [Disclosure: I paid $57.50 for the 48 razors, so I would get a small profit from the transaction. Very small; that's not my goal.]
For some reason they also gave me free Standard Shipping. Not sure why, but I'm not complaining.