Wow, that level of service is amazing. I looked at your link and the site is the Amazon one, indistinguishable from any of the others. I tried googling to find a web-site, but there was none. And yet here is service that certainly stands out from the crowd.
I don't know what books Ms Banes specializes in (she doesn't recognize mine!) or how she does her business (does she just have stock or does she try to find books?). In Canada there is a radio presenter who has instituted an annual award called the "Arthurs" which are given to people who go out of their way to help others without any thought of recompense. I would think Ms Banes might be a nominee.
What are the engineering and design challenges in creating successful IoT devices? These devices are usually small, resource-constrained electronics designed to sense, collect, send, and/or interpret data. Some of the devices need to be smart enough to act upon data in real time, 24/7. Specifically the guests will discuss sensors, security, and lessons from IoT deployments.