Net::Amazon::Validate::ItemSearch::jp::EAN;
The default value is Books, unless mode is specified.
The list of available values are:
Apparel
Baby
Blended
Books
Classical
DVD
Electronics
ForeignBooks
HealthPersonalCare
Hobbies
Kitchen
Music
MusicTracks
Software
SportingGoods
Toys
VHS
Video
VideoGames
Watches