The Trump campaign also pointed to a report that a health care reform-themed rally in 2009 that then-President Barack Obama hosted at the same venue amid ongoing congressional debate over Obamacare. The price for security was $20,000, according to the St. Paul Pioneer Press.
#3 | POSTED BY ANDREAMACKRIS
$20,000 was JUST for overtime paid to 50 police officers coming in for security during Obama's event.
It didn't include anything for lane closures, additional security needed for Trump's rally, use of the facility, or any other number of costs that aren't part of that $20,000 figure. The figure from Trump's Rochester, MN visit is just under $200,000 and Rochester is MUCH smaller.
The costs being used to determine the $530,000 number are being based on other events like the Super Bowl ($6 million) and the Men's Final Four ($1.5 million).
In addition, the reason they are also charging differently: This is a Trump campaign rally. Obama's was not a campaign rally in 2009 after he was elected; it was just a Presidential visit. So the City footed more of the bill for that visit.