It’s not going to cost more than most other scifi shows. Or even a big budget drama with a star cast (which this probably wouldn’t have).
The thing about a TV version is; who are the humans? The Predator has no dialogue. They’re highly intelligent, but the moment they speak english for real (not just mimic someone) they’ll become less alien.
So who are the human cast and how do you get a series out of them? The secret agent and special forces guys tracking the Predators seem the obvious choice.
But we still don’t know what Disney/Fox will be doing after the deal is complete? Will Fox be a convenient place for Disney to make all the things Disney doesn’t make?