That is the most confusing text I've seen in a while.
Razor-Type Blades - such as box cutters, utility knives, razor blades not in a cartridge, but excluding safety razors.So safety razors are excluded but technically they are razor blades that are not in a cartridge. Why would they be excluded?
I once checked at a CVS to see if they had blades since I know Gillette makes a safety razor and I often see the soap and brushes at CVS. I wasn't able to find any so it might be very uncommon. Plus I am not sure they would fit in my Merkur shaver.