KSW isn't a big fan of releasing numbers. Not sure if they ever have released concrete PPV sells or other accounting numbers.
https://mmabiznes.pl/2017/06/23/ksw-colosseum-rekord-sprzedaza-ppv/
According to this source they sold more PPV's than Adamek vs Klitschko (200 000) at KSW 39 but this was the 56 000 stadium show and also by far their biggest show ever. I think normally they just sell half of it.
But still, most of their events are on PPV, sometimes on Free TV (1 of 5 events this year) but not with their biggest names and with some big commercial breakes.
When it goes about the costs, Lewandowski likes to repeat that their biggest cost factor are the fighters salaries (70-80 % of all expenses). Don't know if there are concrete numbers there but Kawulski recently said in an interview that they already paid some fighters over 1 000 000 Złoty around 270 000 $ (but this includes PPV points I think) ,Khalidov is one of them, so this probably also adds up a bit. And you have to consider that there are other scales for Poland than the US, so this are some big ass expansions.
And KSW has a quite big production and I can imagine that all this lights and other showeffects,big screens, opening ceremonies, flying fighters to Poland for trailers and press conferences, bands at the weigh ins etc. cost a lot of money, too.
https://mambiznes.pl/wlasny-biznes/...dzis-ksw-to-dobrze-zorganizowany-biznes-83801
around 700 people work at an KSW event on average (at KSW 39 it were 4 times more people) That also costs a lot.
https://mma.pl/maciej-kawulski-o-ko...asze-gale-kosztuja-po-kilka-milionow-zlotych/
Maciej Kawulski said once in an interview that their events cost a few million Złoty.
But in general I think they have a better bookkeeping than ONE FC.
You can say a lot of things about Kawulski and Lewandowski but they are not dumb, they know how to run a bussiness, KSW became huge in Poland. It's became a real brand, they opened just opened a second KSW cross fight gym in Poland I think, they have their own KSW sports bar, they sell their own branded clothing, offer an own summer camp and they just made a film/blockbuster about MMA.
They have huge costs but they also generate a lot of income, therefore they sign all this freak fighters that attract a lot of fans, they also have only 9 fights per card because of the high salaries. They don't offer free youtube streams like ONE and they have some big companies that work with them/there are a lot of advertisements during their sows.
I also think they don't have this high marketing costs as ONE since Martin Lewandowski has his own marketing agency and they also just have to focus on the polish market and don't try to take over a whole continent.
And you also don't have to forget that all their events are in big arenas, where they sell about 9 000 - 15 000 tickets and for polish standards this tickets ain't cheap (KSW 46 ticket prices go from 70 to 2500 złotys).