Amazon.com: Toner Cartridge T-5070C-m Works for Toshiba E257 307 457 507 257s 357s 457sd Series Monochrome Laser Printer, Yields Up to 42,000 Pages High Capacity 2 pcs Black : Office Products
TONER FOR USE IN TOSHIBA E-STUDIO 207L, 257, 307, 357, 457, 507 (TYPE T-5070E) - CROSS
T-5070E T5070E T 5070 Toner Cartridge Chip For Toshiba E-Studio 257 307 257s 307sd 357 457 357s 457s 507 EUR Black Reset Chips - AliExpress
Toshiba T5070U Original Laser Toner Cartridge Black 1 Each 36600 Pages - Office Depot