Currently nonexistent. They were on Laird, but had a bad fire a while ago, and haven't announced plans to reopen as far as I know. If you're looking for pearl sugar, the last time I bought it I found it at Dinah's Cupboard.
You can find small boxes of pearl sugar at Viking, a distributor outlet open to the public, at 31 Railside Drive. Despite the similar name, I have been told they are not connected to the Milbree-Viking deli which is closed due to fire.