It occurs to me that there appear to be three approaches being explored with ketamine treatment?

• My trip experience is most akin to "ketamine infusion" sessions. Those are the big dose in a clinic type things. I personally attest to this as a plausible approach to augmenting therapy
• There's periodic low-dosing managed in a semi-clinical environment, where you get some of the benefits of just.. being dissociated, but without having it occur naturally as a trauma response. Sounds like my cough syrup era, or the nice feeling of a good post-acid afterglow. I am skeptical of this as a path towards permanent recovery / freedom from learned self-torment / freedom from being medicalised for long stretches of time
• Then there's whatever the operation you've found is doing, which looks like a grey area way to sell ketamine for daily use. I am skeptical that this will not turn into a mini oxy type scandal real quick. If they are not also offering therapy as part of their services, they are either libertarian-brained opportunists or straight up abusing the marginal gains that legitimate research has helped make (re: decriminalisation and the opportunity for medical research / treatment programs,) to make money.

The first two, I'd entertain as plausible approaches though with very different long term goals and expectations for recovery and regaining control of your life. I would sit by and be curious if a friend were doing these.

The last one I would exploit because I seek drugs. I would not trust them with your physical and mental health. I would counsel a friend not to fuck with this.