Helen has been very open about past problems with Adorama's used department. She didn't make excuses for the past, and said that those people had been replaced. Because of that, I am willing to once again consider Adorama for used equipment, after writing them off previously after a bad experience.
Maybe there are still problems. She doesn't run the place, so she can only do so much directly, but I think she's sincere. Credibility is the basis of her job. If nothing has changed her credibility will suffer, so she has a personal interest in seeing changes occur.
I once got from KEH a supposed BGN lens which was clearly UG. They took it back, no problem. Mistakes do happen. I wouldn't judge anyone on one experience, unless it were egregious, which my experience with Adorama three years ago was. Helen has put her credibility on the line by saying changes have been made. So I'm willing to give Adorama another chance.