Well, obviously this guys has issues. I purchased my first 4 discus from him several years ago and I had the same problems most people here had....dead fish, poor quality, bad customer service. He messed up on the shipping date (after having two conversations with him regarding when to ship). so my first shipment sit at my door step for 24 hours in 20 degree temps. No one survived. I nearly quit before I got started. My wife was giving me the "your discus career is about over" look.
Then I read about Hans on this board. The complete opposite. Great healthy fish, friendly and informative. I'm so happy to have meet him and his discus.