See what happens when you hire 1 bad apple within your buisness, it can be only 1 write up like this hundreds of potential customers could be gone just like that in this age of forum blogging, this case may have 2 side of the story but the damage could have been done for a reputation which may have taken years to build. Treat them equally & never differentiate $1 customers & $1K customers, always hope that he will return in the future or recomend a friend of his who's into Hi-end stuffs possibly $10k setup.