Believe what you want. The cost comparison is bull .
The reason "life in prison" trials for potential capital crimes are cheaper is because they plead out for the reduced sentence so it doesn't have to go to trial and risk the needle. Take the needle out of the equation and they have no incentive to plea and every one will go to trial. Overall cost will increase, not decrease.
It is simple logic.
Prosecution is salaried. They get paid no matter what they are doing. Take that cost out of the claim.
At least half of capital cases hire their own defense attorneys. That doesn't cost the state a dime. Take that cost out of the claim.
For the public defenders I linked the cost. $15,000 for a death penalty case certainly isn't "millions"
Say another $15,000 for the appeal and the public defender is done. The State has fulfilled it's legal obligation.
Any further defense motions/appeals are done by pro-bono attorneys and cost the state nothing.
The appeals briefs for the prosecution again are from salaried attorneys. Take that cost out of the claim
It doesn't cost any more per day to keep a guy on death row than it does for a life in prison sentence in a a maximum security prison.
In other words, the claim that death penalty cases cost millions more than life sentence trials is total bull .