Brother TN660 Black Compatible Toner Cartridge Brother TN660 Black New Compatible Toner now available from The Cartridge Store��. With most big box stores selling the original OEM TN660 toner cartridges for close to $100, these brand new aftermarket high yield cartridges provide an excellent alternative. Just like any aftermarket product there are many grades available, we only buy premium! Buy almost three of our A+ compatibles for the price of one OEM while maintaining excellent print quality and consistent high Page Yields. Stock up today as priced may increase due to the week Canadian dollar, with shelf life up to 4 years it pays to keep a few on the shelf.