"The blades used by Mach3 only cost a few cents to produce, but can sell for over $2 each. This shows that profit margins on Gillette razor blades are typically over 4500%."
Ez a jó biznisz... 
"Wherever you go - go with all your heart." --- Eladó HiFiMAN HE400se és HE560 V4 planár fejhallgató --- https://hardverapro.hu/aprok/hirdeto/dorien/index.html
