Hello Hsrphy

The so-called setup cartridges actually almost always have a lower filling quantity.

Therefore, the cartridges you have selected should last longer.

The black cartridge has a print capacity of 1500 sheets at 5% coverage.

The colour cartridges have a print capacity of 1000 sheets at 5% coverage.

I am not aware of any alternative toners, as the Samsung toners tend to fall into the cheaper region.

Greetings John