Money, money, money.

There are more ways to make money in a presidential campaign than just stealing money from your own personal "charity" slush fund. You can also suck in other people's money by turning campaign donations into straight profit.

Republican presidential nominee Donald Trump’s campaign paid more than $500,000 in August to companies the brash businessman owns, according to campaign finance reports released late Tuesday.

That includes $170,000 a month for unfinished, window-free space in the middle of Trump Tower.

Trump also spent $11 million on his web site last month. That seems steep, but if there’s anything people are talking about in this cycle it’s Trump’s canny use of digital resources and the technical prowess of his campaign.

What’s another big expense at the Trump campaign? Fear. Even though Trump already has Secret Service protection (and charges the Secret Service for being on his planes), he needs more genuinely tough guys around.

Trump also increased the amount of money his campaign shells out for private security, by nearly 10 times. The expense went from $20,000 in July to more than $180,000 in August.

That’s a fraction of what Trump has paid out to 11 private security firms during his campaign. You often see them emerging from Trump’s plane before he appears, wearing combat gear and carrying assault rifles.