In order to get the full $70 rebate, you need to buy the printer (ML-1740 ) AND a toner cartridge (ML1710D3). If you only buy the printer, you get a $50 rebate.
The printer is $120 before rebate
The toner cartridge is $70
So either buy $190 worth of stuff - get $70 rebate for a final price of $120 for this printer and a cartridge.
- OR -
Buy the printer alone for a final price of $70 (120 - 50 MIR).
OP may want to clarify this in the title.