I don't get it either, maybe a collector kit given that release? When I was in Okinawa (several years back) I picked up a few of these Bandai 1/48 armor kits at one of the hobby shops (majority of my builds are aircraft too). There were shelves of them at that time, and a good chance there still is.
Sold them all off on ebay too, got more than I paid (about $10 a piece at the time of purchase) for them, but not $99!
WIP:
Trying to get my hobby stuff sorted - just moved and still unpacking.
"Gator, Green Catskill....Charlie On Time"