QUOTE(District @ Feb 7 2014, 10:23 PM)
I suggest go to Adwords and paste main keywords in keyword planner from your videos, i suppose there you will see average cost per click. Other ways you can try contact other people's which is making similar videos / and channels maybe they will share this information.
District
I know about Adwords but need to know about adsense..........how to use youtube for making money without any promotional campaign and with the advertising campaign such as adwords