As does Pete's Fresh Market in the Mexican spice section. Don't know if it's used much at all in Mexican food, but I see it available in those plastic-bag packaged herbs and spices. (So not the jars of spices, but the bags where you have stuff like Mexican oregano, avocado leaves, chamomile, all your hot peppers, bay leaves, etc.
This sort of packaging). I'm pretty sure I've also seen them at Cermak Grocery (under the Badia brand) and perhaps even Shop & Save. Anywhere with a decent Mexican spice section.
Looking through my spice cupboard, I see I have a one-oz back that is Petes Fresh Market branded, labeled "Anis [sic] star blossom/Anis estrella." Packed by Maris Candy Inc. in Chicago on 2266 S. Blue Island, if that's of interest to anyone.
I'll say this, though. I just opened up the Pete's bag and it's definitely not as strong as the star anise I'm used to. And I don't see the typical seeds inside the individual pods that I usually see, and the color of the star anise itself is a darker brown, and the texture is a bit drier. The last batch I bought was from some Indian grocery, IIRC. I wonder if there are different cultivars.