I've looked on hyperdia and have written down the different prices and times of the Shinkansen vs ordinary trains. I think I did it correctly.
Ex. March 31 Tokyo to Nagoya on Shinkansen 10,380 140 minutes
On ordinary trains 6,090 386 minutes
Before I purchase this pass I wanted to make sure it takes me to all (if not most) of my destinations. Here is my itinerary.
March 21-30 Tokyo (Nikko and Kamakura)
March 31 Nagoya (Activate JR Pass)
April 1-2 Hiroshima (Miyajima)
April 3-6 Kyoto (Nara)
April 7-10 Osaka (Mt Koya)
April 11 Yoshino - Kanazawa
April 12 Kanazawa
April 13 Shirakawa-go - Takayama
April 14 Takayama
April 15-16 Tokyo
April 17 Narita to fly home
The day trips are next to the destinations. I was weighing between budgeting with the Willer Express (highway bus) and the JR Pass (better travel time). Thank you for your help!!