You're right, it was a shavette. This was the one and only time I've gotten a straight blade shave, but at the time, I was often shaving with a double edge razor at home. The blade in the shavette appeared very similar, and I can definitely tell the difference between new blade and old. To me it was a clear case of "penny wise, pound foolish". *I just noticed from your link that the type of blade used was the DE blade, about which the author says "I cannot, in good conscience, recommend any shavette style razor that uses DE blades."