Amazon.com: MADE IN USA TONER Compatible Replacement for use in Konica Minolta bizhub C258, c308, c368, c454, c554, C454e, C554e Universal (TN-324K/C/M/Y, TN-512C/M/Y/K) (Black,Cyan,Yellow,Magenta, 4-Pack) : Office Products
Amazon.com: Konica Minolta Original Toner Cartridge - Black : Office Products
Amazon.com: MADE IN USA TONER Compatible Replacement for use in Konica Minolta bizhub 308e, 368e, C258, C308, C368, C458, C558, TN512K, TN324K, TN513, TN514K, TN515, TN516, TN326 Universal (Black, 1 Cartridge) :
Best Buy: Konica Minolta Toner Cartridge Black 947-159