I personally have had a bad experience with this person. A couple of years ago, I had arranged to view his IM 20 tank. I asked if the tank had scratches or any aesthetic defects. He assured me that:
1. It was in very good condition
2. He said that if I could find a single scratch, he would give me the tank for free ! ><
However, when I made the trip down, I saw that the tank was badly scratched in various places. Even worse, the black background sticker was peeling off the sides of the tank. He was not at home.
I later apologised to him for deciding not to go ahead with purchasing his tank. I highlighted that the tank was in bad condition, and not how it described it to be.
(Fyi: Although I could have brought up his promise to give me the tank for free, I did not.)
To my surprise, even after I had apologised for deciding not to buy, he was very rude and scolded me for wasting his time! Clearly, it was I that had wasted my time, effort and travel expenses to view his tank that was not even remotely close to the condition he described it to be in.
Not a pleasant experience.