No idea if the cost for 4K is actually that high, but you have to consider that filming in 4k instead of 2k means better cameras, better lenses, better lighting, more powerful editing suites and CGI rendering will take double the time, double the power and thus double the money.
Again, no idea if their estimate is correct, but I can imagine that switching from 2 to 4k means a big chunk of money.
No idea if the cost for 4K is actually that high, but you have to consider that filming in 4k instead of 2k means better cameras, better lenses, better lighting, more powerful editing suites and CGI rendering will take double the time, double the power and thus double the money.
Again, no idea if their estimate is correct, but I can imagine that switching from 2 to 4k means a big chunk of money.
Accordingly there are 9 episodes per year.