Fair Share on Roosevelt would prolly have em.
I'd be surprised if any Jewel or Dom in OP didn't have them, but one pound? Maybe not.
And yes, you will need to clean them no matter what the container says. Washing is not the issue, it's the little "things" you have to pick off of the "meat" that's the issue. I remember chitlin cleaning was done the night before cooking, and the ladies would do this. It was a pretty long process involving the whole kitchen sink being out of commission for a good three hours, and plenty of schnapps spiked tea and gossip flowed freely. I would watch the little tv in the kitchen until I was "asked to leave" after the ladies got buzzed and didn't feel like holding their tongues anymore. Sometimes they would let me pick the little nit-like things off of the chitlins, but after a while, they'd tire of my half assed workmanship.
I'm wondering if the Mexican tinged markets sell them by the lb in the deli sections. Never checked.
You'll want to cook them outdoors, maybe in the garage if your neighbors are persnickety about foul odors in the hood (after parking the cars on the street.) Chitlins cooking in the crock on the back or side porch brings fond memories of N. Woodbine and N Euclid ave for me. I'm sure the neighbors called us "ghetto" behind our backs during chitlin cooking times, and we probably interrupted their nice Thanksgiving or Xmas dinner with the eau du intestine wafting through their windows.
They stink, and they're wrinkly, and gray, but damn if a bottle of simple hot sauce and a plate of long stewed chitlins ain't some good eats.
We cannot be friends if you do not know the difference between Mayo and Miracle Whip.