Perhaps the prison system needs some re-thinking. Hardened criminals and repeat offenders should spend time in high security and they should do the whole sentence. No TV, no sex movies, no T-bone steak, no conjugal visits, and most of all no drugs!
First offenders and ones deserving rehabilitation should be housed separately and encouraged to better themselves. If they co-operate then let them out early, but if they break the rules they go to the Big House to complete their sentence. Anyone trying to form gangs or smuggle drugs into prison spend their sentence in isolation. Random and frequent drug tests should be done. Anyone failing these should have the option of providing their source or facing extra time. Prison time should be used to rehabilitate when practicable but it should also be a stern punishment reflecting the crimes committed. If prison time is to be a deterrent to crime it should not be a soft life paid for by hard working citizens who can not afford the luxuries provided to those behind bars.
If drugs alone were properly controlled it would be a deterrent for a return visit and in the long run reduce total costs!