I have only had 2 interactions with Frank, both times it was trying to buy a card from him.
1st time I PMed him saying I will take the card you have listed. Well 2 weeks later he got back to me saying it was priced wrong and added $20 to the price. I really wanted it so I said ok. Another week goes by before he finally responded back with his payment info.
2nd time he had a nice card listed that I wanted but only had a picture of the front of the card. I PMed him and asked for a picture of the back side. He responded almost instantly. Bad part was it was a picture of his nude backside.
Then a couple minutes later I got another PM from him saying he was sorry because he thought he was returning a PM from another site he frequents.