I'm always on the lookout for a reasonable source for Merguez sausage. Fatted Calf's is good, but it's $9 per pound and they "cheat" by adding a little pork to the mix. Wandering through the Tenderloin on Sunday, I spotted Nour Halal Meats at 476 Eddy. Yes, they had Merguez but only a beef version was on hand. The friendly butcher told me they have freshly-made lamb merguez on Tuesday, so I returned today. They also make a chicken version which, along with the beef, is freshly made on Wednesday. The lamb merguez was perhaps a little lighter on the harissa than I like but otherwise was the right texture and nicely spiced. In both respects it was better than the beef version, though it may have been because the lamb was fresh, while the beef was four or five days old when I tried it. All versions are $3.99/lb, less than half the price of Fatted Calf's.
Nour Halal Meats and Market
476 Eddy, nr. Hyde