My sister had one in a private Harrogate clinic, the kind where they lead her to believe she'd be fully unconscious for however long it took for the drugs to flush the opiates out of her system, coming round after a few days miraculously cured and symptom free. It was nothing of the sort of course. They doped her out the first day while they pumped naltrexone into her, usually at this point inserting the Naltrexone implant under the skin, but as she'd refused the implant not a whole lot more was done other than a vitals check every few hours, and denial of her requests for more benzos to help her sleep. It's true that the detox is shorter than it would otherwise be elsewhere because it throws you straight into peak withdrawal, cutting the first couple of days out as you wait for symptoms to come on and get worse, but she was still rattling her tits off at the end of day 5 when she was officially discharged as a cured ex-addict, so whoopidoo, 2 whole days saved at least, one of them being not so bad and the most manageable part of a detox anyways, that will be five thousand pounds please Miss Sepher.