KTM vs Honda vs Yamaha (-> Maintenance costs)

Hello, I wanted to ask, since I stand before buying a 125er, how big are the differences in the price of inspections, wear parts etc.. I have to drive the motorcycle in two Jaharen about 10000-12000km, and to buy new. To what extent is the CBR125R really cheaper than ‘YZF-R125,if one calculates maintenance, inspections and resale value? So at the moment the YZF costs about 700€ more than the CBR, but as far as I have read the service intervals with the Honda with 4000km be significantly shorter than the 6000 at the Yamaha. I found nothing so far about the RC125 of KTM. What do you pay about per oil change, and what during the inspection? After I just read the text I typed, and that sounded rather confusing, here again a clearly formulated question: What will I get after two years (12tkm) for the models RC125,YZF-R125 and CBR125R, and what will I get about for maintenance, inspections and wear parts in the time I realize that no one will be able to give me an exact value, but maybe I can give you a clue. Either way or so thank you! Greetings, Chris