I feel it is widely accepted that it is indeed more expensive, and the first page of a google search provides quite a bit of material that substantiates this.

I feel it is widely accepted that it is indeed more expensive, and the first page of a google search provides quite a bit of material that substantiates this. However, someone that is truly against it will always find a way of discrediting it. I'll share this, which should be pretty comprehensive: https://www.ojp.gov/ncjrs/virtual-library/abstracts/capital-punishment-or-life-imprisonment-some-cost-considerations https://www.ojp.gov/ncjrs/virtual-library/abstracts/capital-... But this provides more recent aggregate data citations: https://www.amnestyusa.org/issues/death-penalty/death-penalty-facts/death-penalty-cost/ https://www.amnestyusa.org/issues/death-penalty/death-penalt... Usually in these types of discussions, the cost being more is finally accepted. Then supporters of capital punishment move onto it being an effective deterrent, which is then easily debunked.