Price of buses from takayama to Shirakawago

I understand there are regular Nohi buses from Takayama plying Shirakawago and back. Does anyone knows :

1. Does JR Pass covers Nohi buses ?
2. DO they have different bus prices for children ?

As we'd like to tour the place on our own pace, does anyone has any idea if there are any free English speaking guide in Shirakawago, just like in Tokyo ?

Thanks

1. Does JR Pass covers Nohi buses ?

No.

2. DO they have different bus prices for children ?

I don't see a child price or other info listed on their website so probably not.

As we'd like to tour the place on our own pace, does anyone has any idea if there are any free English speaking guide in Shirakawago, just like in Tokyo ?

I wasn't able to find any free english guides for the area. Maybe contact the local tourist association for more info:

http://shirakawa-go.org/

As stated above there is no child fare indicated on the Nohi bus service and the JR rail pass is not valid for it. If you are doing a day trip to Shirakawa-go from Takayama the roundtrip fare is 4300 yen.

http://www.nouhibus.co.jp/english/shirakawago_kanazawa.html

But interestingly there are half-day guided tours whose cost is cheaper than the regular roundtrip bus fare, and there is children fare as well.

http://isite.p2.bindsite.jp/tour1/pg94.html

http://tour.j-hoppers.com/shirakawa-go_tour/