http://www.pcgamer.com/gta-onlines-doomsday-heist-is-live-now-and-features-a-900000-orbital-cannon/

GTA Online's Doomsday Heist is now live as part of the game's latest update. To begin the heist, you need to buy a new building called a facility from Maze Bank Foreclosures. The cheapest one will set you back $1.25 million of in-game cash, while the most expensive option costs $2.95 million. You can also install an optional orbital cannon, which costs $900,000.

Is that basic cost justifiable? If you go for a cheaper option and play GTA regularly, I think that sounds okay, although I'll have to play the heist first to make a proper call on that. According to IGN, Doomsday Heist features about 12 hours of new stuff, which is about as long as I played each GTA IV expansion back in the day. In real money terms, $1.25 million of in-game money costs £12/$20 in Shark Cards. I've bought the facility closest to my hangar at Zancudo, which is $1.67 million. To use it as a spawn point, though, I'll need to buy sleeping quarters on top of that, which is another $290,000. You need to be a CEO or MC President to start the heist.