Concerning the ART9, Needledoctor doesn't carry it right now, but LpGear does. Amazon doesn't have it but eBay does, one from Thakker in Germany and the other from Japan-Select-Shop. LpGear's price is less than Thakker's and about $150 more than Japan-Select's.
Japan-Select:
http://www.ebay.com/itm/Brand-new-Audio-Technica-MC-dual-moving-coil-Cartridge-AT-ART9-/262224630473...
LpGear:
http://www.lpgear.com/product/ATART9.html
Thakker:
http://www.ebay.com/itm/Audio-Technica-AT-ART-9-MC-Tonabnehmer-Cartridge-Cellule-Phono-Testina-/3514...
Japan-Select:
http://www.ebay.com/itm/Brand-new-Audio-Technica-MC-dual-moving-coil-Cartridge-AT-ART9-/262224630473...
LpGear:
http://www.lpgear.com/product/ATART9.html
Thakker:
http://www.ebay.com/itm/Audio-Technica-AT-ART-9-MC-Tonabnehmer-Cartridge-Cellule-Phono-Testina-/3514...