ANA Experience Japan ticket purchase

According to ANA website: http://www.ana.co.jp/wws/ph/e/wws_common/promotions/share/experience_j...
flight connection between Ishigaki and Tokyo Haneda should be JPY10800 in ANA Experience Japan fare. However when I select this connection between these two cities I see the price of 247.8USD in ANA Discover JAPAN fare. Does anyone know how to purchase the one-way flight in ANA Experience Japan fare?
We need one-way flight from Ishigaki to Tokyo Haneda.

I tried the search and found a USD100.92 option. Maybe your dates are outside the travel period.

Also, Experience Japan-eligible seats are limited, and they do sell out on busy routes. What are your search parameters exactly?

I search for October 30th Ishigaki-Tokyo Haneda.

OK then you should have noticed that the airfares before 28th Oct are 100.92 USD while later on they become 247.8 USD. I think this is because you tried to reserve too early.

http://www.japan-guide.com/forum/quereadisplay.html?0+156976

This thread deals with Jetstar ticket, and the OP can not reserve the ticket beyond 28th Oct. As I (am a Japanese) checked Ishigaki Haneda on 30th Oct, the ANA website returns the answer "out of date". Oct 30 is not a special busy day, so you will be able to buy the 100.92 USD ticket when ANA start to sell for that date.