I did okay with book sales at the conference - 8 books sold. That's not impressive in and of itself, but I have to remember this was a conference focused on marketing, performance, and improving professional speaking skills, so it's not like I was marketing to my target audience.
One cute comment did arise from the conference. My co-presenters current books are titled Don't Murder Your Mystery and Why Is Everyone So Cranky? My book is titled, Lessons In Stalking. The valedictorian of our tract pointed out in her speech that coming in everyone was afraid they would be learning about stalking and murdering cranky people. We hadn't put the three together, but good point!