Bob Nagode reckons that there have been weeks where he has sharpened upwards of 1,000 knives on the hotel and restaurant circuit. You can find him on Saturdays at the Bayou City Farmers' Market. His services are a bargain at $0.85 an inch, and he sells knives, too.
Knives really only need to be sharpened once or twice a year. The rest of the time, you just need to re-hone them. – Jay Francis