Witcher 3 budget was split 50/50 between production and marketing. It will be probably be similar here.
I finished CP2077 yesterday. Still need to check remaining endings. It's a fantastic game. It's not perfect. It may not be the best RPG ever, best shooter ever, best stealth game ever, best sandbox ever, best story ever. Whatever, I had a great time, even with occasional bugs. One can definitely see the amount of work put in it. Story is shorter than Witcher 3, there's some filler in form of sidegigs, which are very similar to each other. On the other hand combination of stealth and action is great. Most buildings have multiple doors and windows one can enter through. Some can be entered through roof, especially once you get legs cyberware that let's you jump higher. There are dozens of those, but they are small. I would prefer less but more complex maps. Other thing I'm not a fan of is looting and crafting, which are similar to Witcher 3.