I was intrigued by your challenge so I sent an e-mail to Sazerac. Here's the reply, although when I checked the Haskell's in Highland Park a couple weeks ago, they didn't have them:
We received your e-mail regarding Peychauds. We are happy to report that you can now obtain Peychauds at Haskells. We do not track the inventory levels at each location. We highly recommend calling the store near you first to confirm if it is available.
Please let us know if we can be of any further assistance.
Thank you for your support of Peychauds Bitters.
Sazerac Company Inc.