I emailed HEB with a question and while I was emailing them I also asked about Salders at HEB. Here is here response...
I have researched the Sadler's BBQ Sauce you requested. Our Cleburne
store does carry this item in the small bottles in the Deli Department.
It is located near the Deli Meat and Cheese Section. If you have
trouble finding it, just ask for assistance at the Deli Counter.
I know it's a was from you, but they do carry it...
I am hoping to go to Cleburne soon about a job and if I do I will try to get some and get it to you...