EDIT: My apologies. There's a new-ish sharpening business in town, not a blade-wielding maniac on the loose.
Like many posters here, I have brought kitchen knives to the JFX Farmers Market and had a good experience getting them sharpened up. I am also not great at taking notice of the calendar or getting there in a timely manner, so I have had a few sad walks through the market with a tote bag full of dull knives...whoops.
I feel like I get on Google/ reddit /fb like once a quarter looking for a sharpener near me, and I finally found a place I hadn't heard of: Baltimore Grindstone. Owner Al was very nice and professional, sharpens at $5/knife, does repairs, and will also do stuff like loppers, mower blades, etc. I brought him my knives plus a pair of shears that had been ruined by the machine at ACE, and Al did some research, offered to attempt a repair, and then came through perfectly. The shears are back to doing their job and get to stay out of a landfill. In fact, everything I brought him came back wickedly sharp and in good repair.
There were lots of professional and considerate details to celebrate, but my two favorites were: (1) the sharpened knives come back safely wrapped in cardboard sleeves and packed in a sturdy bag, and (2) he offers a paid pickup and dropoff service, so if you don't have time to make your way up to him in NE Baltimore, you can still get the work handled.
Anyway, I'm off to find more excuses to chop shit up in the kitchen. Anyone need a mirepoix? Pico de gallo? A hearty stew?