Some shop owners just don't get it. There's one near my office that I used to think was decent. It's in a mall, but the prices are pretty good and the selection is nice. I was in there one day and saw some mold starting on the feet of some CAOs. I told the owner and he took them out of the humidor and mentioned that with the heat we had recently, the humidity jumped up and he was trying to get it back down.
A week or so later, I stopped back in and the same moldy cigars were back in the humidor! I know they were the same ones because he only had a handful left. I picked them up just to check, and sure enough they were all moldy. I put them down, walked out, and I haven't been back since.
-Lenny