I guess that I will be the first to post in South Dakota
No cigars to buy in Pierre, but if you are in town, they are on me anyway!
There are a number of cigar friendly places in town, all are nice and CHEAP.
Ramkota Hotel and Convention Center - Very nice bar and very cigar friendly. Sharon is the bar manager, Charlene is the number one server, either will take good care of you
View 34 - A nice restaurant upstairs, Pub downstairs, huge wine cellar (for South Dakota anyway) and cigars are allowed outside. Excellent service by young and attractive girl next door types and it is right on the golf course
American Legion - Old school bar, you can smoke anything you want inside or out. Not a nice place esthetically but cheap drinks and it can be loud
Outpost Lodge - Great steaks and Ribs, smoking allowed in the bar and food can be served there.
If you are coming to town, let me know. I'd be happy to be your local sponsor. This can be a tough town (cowboy town) so a local can keep you out of trouble!