$85 seems high for what is included in the Adafruit MetroX Classic Kit - Experimentation Kit for Metro 328 : ID 170 : $84.95 : Adafruit Industries, Unique & fun DIY electronics and kits kit. You should be able to get the components for far less than that, and with so much free documentation on the web, the info that is included is not a big deal, but it looks like it would get you up and running, at least there is documentation for the projects you can build with it.