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not as cheap as these past deals but still genuinely good :)
Gillette Mach3 Razor 1pk $5 @ Woolworths
Gillette Mach3 Cartridges 8pk $18 (Save $5.50) @ Big W
I got a double edge razor. And never looked back. They're not as forgiving as the cartridge razors (ie, don't shave if you sleepy otherwise you will look like you just stepped of the set of a horror movie) but blades are about $1 each and it's much nicer to have a blade made of steel not plastic.
To each their own.