The only place I know that usually carries them is Starbatches, but they seem to be seasonal.
On a side note, while on a very quiet, rainy night, working on patrol, my supervisor bought 2 pounds of those chocolate covered beans from a local Starbatch, and handed them out to everyone. In just two hours, our dispatcher got exhausted from all the activity in a time where one would usually only hear crickets. We were all zinging badly from the caffeine!