According to that site online purchases are currently suspended. Cast Members (Tokyo Disney Resort) pay full price for tickets as far as I am aware. Other Disney Cast Members I would assume to play full price as Tokyo Disney Resort is not owned or operated by Disney (same reason why comp tickets don't work there).
Just wondering....is there any way to buy annual passes to TDR online, or is there any cheaper options to buying tickets? How much do the annual passes cost? Do CM's get discounts on ticket prices?
So many questions.....hehehe
As lazyboy wrote, online purchases are not available at the moment. However, you can buy a voucher at a local Disney Store for the AP of your choice. Then, when you arrive at the Park, take the voucher to the appropriate Welcome Center (which is currently going through renovations) or the East Gate Reception Center at TDL to get your photo taken and AP made. Or just show up at the Parks and buy your AP at the East Gate Center.
lazyboy's link provides price information. There are times during the year when CM's can get discounted and/or free tickets, but that is rare. Also, members of the Funderful Disney fan club can purchase discounted tickets at times. Other cheaper tickets include "Prefecture Resident Day", US military, etc.
Lastly, TDR AP's don't have as many benefits as the US park AP's. Beware.