The road to recovery from alcohol addiction is often fraught with challenges, not least of which is the monetary cost of rehabilitation treatment. Understanding the fiscal aspect of the journey can be a daunting task, but with the right information and planning, it is well within reach. Hence, the objective of this discourse is to guide individuals in creating a comprehensive budget for alcohol rehab treatment.

To start, let's briefly delve into the "Healthcare Cost-Utility Analysis (CUA)". This economic evaluation tool is employed to ascertain the cost-effectiveness of medical interventions. It gauges the cost per Quality-Adjusted Life Year (QALY) a treatment provides. QALY, a measure that combines the quality and the quantity of life, can be a crucial yardstick when evaluating the viability of an investment in alcohol rehab treatment. A lower cost per QALY suggests a more cost-effective intervention, although the actual affordability depends on an individual's financial capacity.

The first step in creating the budget involves understanding the types of rehab facilities and their associated costs. There are mainly two types: inpatient and outpatient facilities. Inpatient facilities, also known as residential treatment centers, provide a comprehensive, immersive rehab experience, but they typically command higher costs. In contrast, outpatient facilities, where patients spend a few hours a day but live at home, are more affordable. The trade-off between these two options is essentially a balance between intensity of care and cost.

Next, we need to consider the duration of treatment. The Substance Abuse and Mental Health Services Administration (SAMHSA) advocates a minimum of 90 days for effective treatment, but the length can vary based on the individual's needs and progress. It should be noted that an increase in duration usually implies an increased cost.

Subsequently, one must account for ancillary services that could potentially augment the rehab process. These could include holistic therapies like yoga, massage, and acupuncture, or specialized counseling. While not always essential, they could significantly enhance the recovery experience at an additional cost.

Moreover, understanding the insurance landscape is a crucial aspect of budget planning. While the Mental Health Parity and Addiction Equity Act (MHPAEA) mandates insurance providers to cover mental health and substance use disorders comparably to physical health coverage, the extent of this coverage varies. It is also pertinent to note that certain treatments might not be covered, leading to out-of-pocket expenses. Hence, a detailed review of insurance policies is essential in budget formation.

Additional considerations include indirect costs such as travel expenses, loss of income during treatment, and potential costs for ongoing aftercare support and relapse prevention. These can significantly impact the overall budget and need to be accounted for.

From an economic perspective, alcohol addiction qualifies as a "sunk cost" – a cost that has already been incurred and cannot be recovered. As per the Sunk Cost Fallacy, individuals often continue a behavior or endeavor due to the investment already made in it, even if future costs outweigh the benefits. With alcohol addiction, however, the future costs - both financial and otherwise - are substantial, reinforcing the value of investing in rehab treatment.

In conclusion, creating a budget for alcohol rehab treatment is an intricate process that requires a detailed understanding of the types and costs of treatments, the insurance landscape, and indirect costs. It also calls for an awareness of the economic concept of sunk costs and the potential devastating effects of continuing alcohol addiction. However, with careful planning and a thorough analysis, this task can be well navigated, leading to a successful journey towards sobriety.