P-89 Scorpion said:
The budget is a rumour and we have no idea if it's including marketing costs which in the case of some of the Marvel films would have doubled the production budgets.
Yes, I'm aware it's a rumor, which is part of why I said "I'm finding this hard to believe [reasons]."
Marketing costs certainly could double the cost of the movie, that's true. And if that's how the number is being cited (production plus marketing in the same pot), it would make for a highly misleading comparison if viewed against the production budgets of other high-profile movies. But it's notoriously hard to get hold of marketing budgets, especially so long before the movie actually releases. It's actually easier for me to believe that the number came out of thin air, wild speculation, or something that was overheard and misunderstood than that it's an accurate quote coming from the sum of production and marketing costs.
So to be clear:
If BvS's [production] costs do in fact come to $410 million or more, I will be inclined to take that as a sign that things have gotten out of hand on the movie, and perhaps that some significant mis-management has taken place.
But I am aware that the stated number is highly under-sourced, as even the article's author is quick to note.