Amazon.com: MADE IN USA TONER Compatible Replacement for Ricoh MP C306, C307, C406, C407 High Yield (Black, Cyan, Yellow, Magenta, 4 Pack) : Office Products
Set of OEM Ricoh MP C407 TONER 842207/842208/842209/842210 KYMC | eBay
Black Generic Ricoh MP C407 Toner Cartridge (842091)