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DENVER — The cost of James Holmes’ trial is going up, and taxpayers are going to be paying the bill.

The accused Aurora theater shooter is expected to plead not guilty by reason of insanity on Monday, but the fact that it is also a death penalty case makes it even more expensive.

Just by comparison, taxpayers’ cost for the public defender’s office in a typical first-degree murder trial is about $16,000.

For a death penalty case, that cost jumps to $400,000 a year, for many years in a row.

For example, death row inmate Nathan Dunlap’s case has already cost taxpayers at least $18 million.

The civil lawsuit against Lynne Fenton, the psychiatrist who treated Holmes, has also been put on hold by a Denver federal judge.