Just saw it in Brookshires here in E. Texas for 8.99 (per six)
"Dublin Dr Pepper was the popular name for a style of Dr Pepper soft drink made by the Dublin Dr Pepper Bottling Company in Dublin, Texas. Dublin Dr Pepper followed the original recipe, using cane sugar as the sweetener as opposed to newer high-fructose corn syrup (HFCS). The Dublin plant formula's use of sugar made it popular among soda fans. According to the corporate headquarters at Dr Pepper Snapple Group, this resulted in clashes with other bottlers and the parent company of Dr Pepper. On 12 January 2012, it was announced that Dublin Dr. Pepper will no longer be produced, after the Dublin Dr Pepper Bottling Company settled the trademark dispute instigated by Dr Pepper Snapple Group."
Dr.Pepper with cane sugar is still produced by a bottling company in Temple, Texas