The thing is, she didn't get a quote. She got an "I believe..."
If a rep can take the time to reply to an email, he can take the time to look up the actual price of a finish, part, or mod.
It's quite possible he was joking. However, it was quite obvious Ms Mendez had taken offense at his reply. At that point, instead of ignoring her (reasonable IMO) reaction, the rep should have apologized. If he had been joking, he could have simply said, "I'm sorry, I was trying to be funny, but sometimes my sense of humor doesn't come across well via email. Please call me at this number."
He didn't do that.
To me, sorry, that is bad customer service. A VP of all people should know, and do, better.