at a dime a piece, i change blades each day. my wife also DE shaves. each day after i shave with a new blade, i give her my old (used once) blade. next day, i rotate again.

i found it frustrating to squeeze shaves from a blade, as there is always some level of weepers, burn, nicks, etc.

no matter how good you are, a new blade is always a better shave.

life's too short to sacrifice a great shave for $0.10.