http://expressreel.com/gprices.htmlJust arming yourself with the prices listed above should give you plenty of ammo for any board who wants to protect their investment. Add to it that your Tech will have intimate knowledge of both fleet and facility, and most likely be able to fill in in an emergency in your or your Assistant's absence, fabrication abilities, troubleshooting, and on and on and on. Retain the right person, pay them responsibly and leave the carrot in the fridge, and watch the value unfold.
With most distributors charging in the $90/hour range, seems this person has the potential to provide you a pretty good value.