MAL a stupid question?

HALLO LEUT. i am just joining my motorad license. (morning first day) am 28 years old and family dad. so now after my exam also wants to have a nice bike, so the kawa ninja looks great and also at yamaha are really chic bikes present. my question now is why are the between the manufacturers such a price difference? ne kawa bj 2000 and ne yamaha 2000 is a huge price difference???? what would you recommend to me as an experienced motorad driver, (I wi ll ne strasen maschinen) optics and technology is most important to me not the brand? can you help me now? thank you in advance and schikke now nice greetings to everyone in the forum.