In two years I've finished a puck of MWF and wore a bowl of Mike's Natural down to the point where I had to add more soap to it. I've finished one or two tubes of cream, too. Rare occurrences, for sure.
Check out the 3017 (http://badgerandblade.com/vb/showthread.php/128392-My-Guess-3017) thread to read about the trials and tribulations of the one known as johnniegold and his compadres!