If you smoke cigarettes and live in Metro Phoenix, then you should probably visit On-Auk-Mor. This is the only location that I have been to. As far as lack of staff friendliness, they have always been polite to me (not overly chatty, which is fine with me). I never used the drive-thru or the the little hot-food dining area on the side. Bathrooms have always been clean. It is a simple place that will save you some money.
As of November 2014, a carton of Marlboro Lights costs $54.95, with zero sales tax added to that. With $62-ish plus sales tax the next cheapest choice (Costco, Sam's Club), that is well over $1/pack cheaper. Obviously, cigarettes cost even more at most grocery or convenience stores. FYI, I believe that all Marlboro cartons are the same $54.95 price; other brands are a few dollars less or more.