Hello Alion11
Yes, toners are included. They correspond to the capacity of the TN-421.
See also here, under "Technical data" then "Consumables and accessories":
https://www.brother.ch/de-ch...
Tip if you print a lot* (*a lot = >6'000 pages per year): Have a look at the MFC-L9570CDW. It's a bit more expensive to buy, but it comes with more toner capacity and the toners are cheaper afterwards.
Greetings