also the only thing that should cost money when killing somebody is:
firing squad bullets and sallary
someone to haul the body away
... this is so wrong. You need:
1. A team of public defenders or private lawyers for the suspect
2. A team of lawyers working for the state to convict them
3. A jury team to decide their fate (sometimes)
4. A detailed investigation of the crime in order to determine the killer
5. Firing squad is only in a few states. In other states its by lethal injection, the chemicals of which are extremely expensive.
They don't just haul the first suspect away and shoot them. It's a long process and the suspect is usually on death row for years before they are killed.